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Home / Product Category / AMPLIFIER / Pre-Amplifier / OSD Audio Preamp-1 Professional Preamplifier Home Theater Surround Sound Home Recording

OSD Audio Preamp-1 Professional Preamplifier Home Theater Surround Sound Home Recording

Product code: PRE-1

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Features & Specifications

• Mic Level Control
• Bass/Midrange/Treble/Loudness/Balance Control
• Microphone Jack Input
• Input Selector
• Low Frequency Filter
• Mute
• Frequency Response: 5Hz - 30kHz +0 -3dB

A preamp is a key component to experiencing true home theater surround sound and a critical element to recording music, yet few people really understand the function a preamp plays. OSD Audio’s Pre-1 is a unique and, yes, affordable preamplifier that accomplishes the subtle audio tasks that transform an ordinary home theater surround sound system into, ‘wow, I hear every detail,’ from a gun chamber being loaded, to the whooshing blades of a helicopter. A preamp delivers similar benefits to music recording by boosting the low-level output on microphones. Because mics generally have a weak output, adding a preamp will deliver a better recording signal level verses simply plugging the mic into a computer and standard recording gear. Preamps do more than add volume, however. Like the home theater experience, a preamp in recording can finesse the subtle “color” of sound by adding tonal quality. Let’s start with what a preamp is and then we’ll cover the attributes of OSD Audios’ Preamp-1 so you can make the wisest buying choice.

What Is A Preamplifier and What Does It Do?


Simply put, a preamp is a separate processor within the audio command chain that accomplishes detailed audio tasks. A decent home theater will typically have one or more amplifiers and an AV receiver. While an AV receiver has amplifier power, power is not its primary function. An AV receiver “receives” audio and video signals from a variety of sources (TV, DVD DRV, etc.) and routes the signals to the speakers. Power is where the amps kick, which supply the juice needed to move the signal with enough amperage so your surround sound speakers produce the best sound for which they are designed. That should be enough, right? Well, not exactly.

The amp may add power, but it can be a bit of a clod because that’s all it’s doing—add power. (Okay, audiophiles, we know it does more, but let’s keep it simple). Enter the preamp. A preamplifier is a low-level amplifier. What that means is that it takes a line level signal (that’s the strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players, television sets, audio amplifiers, and mixing consoles) and amplifies it enough to drive the power amplifier to its rated output. If an amp is receiving a signal at its rated output, it will perform better and your surround system will pick up detail you never thought possible. The same can be said in sound recording where an audio interface enhances the sonic capabilities of a computer. While an audio interface includes an internal preamp, an external preamp gives you more control over tonal quality.

OSD Audio Preamp-1 Professional Home Stereo/Home Recording Pre-Amplifier


There are many preamp manufacturers that range from bizarrely cheap to bizarrely expensive. We look at our OSD Audio Preamp-1 Professional Home Stereo/Home Recording Pre-Amplifier as the middle ground, or an affordable preamp that adds front-end system control to two or multi-channel audio systems and home recording systems without having to load up on credit card debt. OSD Audio Preamp-1 Professional Home Stereo/Home Recording Pre-Amplifier is not shy on features for the price, and we encourage you do research the specs. Our preamp provides four selectable unbalanced analog RCA inputs, Phono, AUX1, AUX2 and CD/DVD and a ¼” Mic input jack on the front panel with adjustable mic level control. Other front panel variable control knobs feature three tone controls: Bass, Mid and Treble, plus Balance, Master Volume and Loudness Contour Knobs with Min to Max settings. Additional front panel controls include Power Switch, Tape Loop, Mono/Stereo, Low Filter and Mute Buttons. We back this preamp with a 2-year warranty because the Preamp-1 Professional Pre-Amplifier is as solid as it gets.

Specifications

OWNER'S MANUAL

  View Owner's Manual          

QUESTIONS & ANSWERS

23 Questions & 24 Answers
Ackerman
from Buying Junk! Get Junk, Oh And I'm sure I will not hear Sh-t ! Junk !!!!! asked:
July 17, 2018
I own one and have a Honorable hum/open ground in the unit. My stuff is working but with the replacement per,-amp it's HUN-CITY. Used within 6" of any component the per-amp protrudes HUM FROM HELL!!!! Well it's worthless for me! Can't put it in my rack!!!! With out the JUNK, my system works without hum/noise and kicks A.. Total Electronic Junk!
1 Answer
Hi Ackerman: Did you return the unit to get a replacement or did you just replace it with something else? Did you return the unit under our 30-day performance Guarantee? tim@osdaudio.com TL/5113
Tim Leahy
on July 19, 2018

Mark
from NC asked:
July 11, 2018
Hello! My 1980's era Carver C-2 pre-amp has failed. Its paired with a Carver M-200t magnetic field power amp. Would this amp make a good replacement for the C-2 to use in conjunction with the M-200t? Thanks in advance for info!
1 Answer
Hi Mark: The new Pre One should do the job but I would not consider it a direct replacement. It does have some nice features including built-in Phono Preamp, Mono switch, Microphone mixer, Bass treble, midrange and Loudness controls. It also features a stereo/mono switch, Tape monitor loop (good for 2 channel Equalizers) and a key new feature: 1.5mv output. It should be selling for twice the price so don't let that scare you off. TL/5105
Tim Leahy
on July 14, 2018

Dexter
from Providence, rhode island asked:
June 18, 2018
I am looking for a surround preamp that outputs 5.1 or better, this only has a stereo output. Do you sell a preamp with surround sound outputs that can be used to drive a multi channel amplifier. Would be great if it were wifi capable. Any suggestions would be appreciated, thanks.
2 Answers
Hi Dexter: I found a couple you might want to check out. The TECHNICS DIGITAL SURROUND PROCESSOR SH-AC500D was a used 5.1 pre-amp processor for $250.00. For something new; the Nu-Force18 (499.99) and Emotiva MX700 ($699.00). There are Audio Video processors that also feature 7.2 Preamp output option but start at $800 and up (check out the DENON AVRX3400H). But id needed two channel you will not find a better value than our Pre One now featuring a 1.5mv output. Good Luck TL/5059
Tim Leahy
on June 18, 2018
HI Dexter: You are correct this is only a 2 channel stereo preamp. You going to have a problem finding a dedicated S
Tim Leahy
on June 18, 2018

John
from New Jersey asked:
April 10, 2018
I have a Amp200 signal is coming from my pioneer sr-75. can I use the Preamp RCA out to hook into the Amp200 to allow it to filter out hissing or buzzing? wil I still be able to use the controls on the preamp? like bass, loudness, treble,Mid etc...
1 Answer
Hi John: The Pre amp would work perfectly between your Pioneer and the AMP200. The Pre amp provides more control of the signal to the AMP200 including Bass, Mid, Treble and Loudness controls. Good choice TL/4900
Tim Leahy
on April 17, 2018

Troy
from ga asked:
April 8, 2018
Is the center detent on the Loudness control "flat"? I understand turning it up towards max increases the bass and treble according the manual, but does the min setting decrease those frequencies? or is min the "flat" setting?
1 Answer
Hi Troy: If you look at the specs in the Owner's Manual you will notice `the Loudness is +4 or 2dB. Comparing that to the Bass, Treble and mid range knobs which ar +/- 12 db that tells me it is Flat at Minimum with no negative detent. TL/4896
Tim Leahy
on April 17, 2018

Joe Smith
from Iowa asked:
March 7, 2018
I would like to be able to occasionally use this as also a headphone amp at low to medium listening levels, in my office setup. Is there enough gain pushing cd or cassette signals to power efficient headhones (about 32 ohms) such as Sennheiser HD 518s, using a RCA-to-female mini adapter? Thanks, Joe Smith, Des Moines
1 Answer
Hi Joe: The Pre One does not have a Headphone Jack (the 1/2" connection on the front is for a Microphone input. Sorry about that Note: I requested a headphone jack on the original design but it would have delayed release while adding additional costs. We are working on a step up unit that will feature a IR remote as well as headphone out put with a 1.5V output compared to the 500mV currently found on original unit. TL/4837
Tim Leahy
on March 10, 2018

Kwadwo
from Charlotte, North Carolina asked:
February 13, 2018
Hi, would I be able to use this pre-amp for the Bose F1 Model 812 PA speakers? If yes can a Bluetooth be added to the pre-amp? If no any suggestion?
1 Answer
Hi Kwadwo: Yes this will be compatible with your BOSE Fi Model 812 PA speaker. It would allow you up to four inputs, Phono, CD/DVD and 2 Aux inputs. You can add a independent Bluetooth Receiver. A good one will run you around $50 to $60.00. The Pre amp has a mic input but you would be better off using the internal mic input. The Bose has a unbalanced pair of RCA's that will connect directly to the Pre One as your line 2 input. TL/4798
Customer Service - Q&A
on February 14, 2018

Tom Finn
from Lombard Illinois asked:
January 9, 2018
Hi I think this is what I've been looking for but want to make sure. I have a Halfer 9000 amp I bought years ago and never got to use until now, I hope. Also I want to use my old Denon DP-51F turntable. My Hafler preamp bit the dust. Anyway I'm using a mm cart. From the manual I looked at looks like it should work fine. Please let me know. Thanks Tom Finn
1 Answer
HI Tom: It might work but the current Pre One has only a 500MV output so may not be high enough for your older components. We hope to release step up pre amplifier with a 1.5MV output which I would feel more confident in recommending for your application. It will raise the price a bit but will be relative to the increased in benefit. TL/4739
Customer Service - Q&A
on January 15, 2018

Hans
from CA asked:
January 2, 2018
Hi I believe that I have researched the OSD system quite a bit, and dont see that it can be controlled by a mobile device. Is this correct? We have 6 speaker zones in our house, and like the features of the amp very much, but would like to be able to adjust each zone from our network. How do we do this?
1 Answer
HI Hans: Maybe you can submit your system into the OSD Upload Your Plans. We do not have an elaborate system that you can just plug and play but we have lots of components that can be configured depending on your actual application. You will need to submit a blueprint or basic diagram with the rooms and zones you want to control. Do you have a Custom Home Theater setup as well. Good idea combining the two using the AV Receiver as your streaming music control center. It also help to add as many images of your rooms/zones. And include where your you would want to store your equipment. Also note what components (electronics and speakers) that you might want to use in your system. Let me know; tim@osdaudio.com TL/4725
Customer Service - Q&A
on January 2, 2018

Zahari
from Italia asked:
May 19, 2017
I need information about weight and volume of package.
1 Answer
Hi Zahari: Here are the dimensions and weight of outer box... Pre-1 21"x 13"x 6" 8 LBS TL: 4375
Customer Service - Q&A
on May 22, 2017

Juan Delgado
from Atlanta Georgia asked:
January 14, 2017
Hi. How can an equalizer be added with this preamp? Any diagrams and settings?
1 Answer
Hi Juan: I believe you can connect an Equalizer utilizing the Tape Loop. You have an input and output connection on your Equalizer. Same with the OSD Pre1. Note many of the current Equalizers have Balanced line in and out. These will not work with the Pre1. But if you find one with RCA unbalanced connections then it will work. When you want. This is from the Owner's Manual: Tape Play: Connect to a tape decks output jacks. Tape Rec: Connect to a tape decks input jacks. When you want to operate the EQ you will enable the tape loop. It will equalize whatever you select as your source (Either DVD/CD/ Aux 1, Aux 2 or Phono). Good luck... TL/4179
Customer Service - Q&A
on January 19, 2017

Dennis Bellis
from Oregon asked:
November 19, 2016
I have paired this unit with your AMP200 power amp, and I can't get them to work together, are these two unit non-compatible? I have tried everything possible with no luck.
1 Answer
Hi Dennis: They should work fine together, first you must determine if the AMP200 is setup properly. I mean does it work on its own with your anyone of your sources plugged directly into Input #2? You need to turn the volume knob on the front panel to fully open (as far as it will go turning it clockwise). Make sure you turn on option is set to normal (right next to stereo bridge switch set to stereo). Then turn the switch on the front to on. Set the delay knob all the way counterclockwise to 3 seconds (next to the Line 2 output). Check the master volume knobs, I believe they are turned all the way counterclockwise or min. Turn your source on then adjust these knobs turning them both clockwise until your start to clip or create distortion now dial them back an 1/8 of an inch. Make sure your source volume is turned up to standard listening levels. Once you have determined the AMP200 is working then it is time to unplug your source from the line#2 input of the AMP200 and plug the source into Aux#1 of the Pre1. Then connect the Output (far right L&R RCA) on the back of the Pre1 to the Line 2 Input of the AMP200 with a stereo RCA patch cord. Now go to the front panel of the Pre1. Make sure input select is set to Aux 1. Then check the four buttons to the right of the input select, Tape should be disables (out), Mono disabled (out), low filter can be enabled (in) and Mute disabled (out). Make sure volume knob on the front of the AMP200 is turned to the middle just like the balance knob. You should now control everything through the Pre1 including bass , mid and treble and master Volume. Loudness is only used when listening to lower levels where it compensates the bass. Make sure power switch is pushed on the Pre1 and they should work together. The AMP200 should light up blue when playing (red in stand by) and the red LED should be on for the Pre1. Let us know if that helps. TL/4129
Customer Service - Q&A
on November 25, 2016

tom schmidt
from redding calif asked:
August 16, 2017
i have a jensen turntable jta230 with its own amp in it 13 watts its doesent get loud enough 13 watts will this one work with it and it only has 2 line in and out ports thank you thomas r schmidt
1 Answer
HI Tom: This Pre Amp only has 500 Ma Gain stage, so its not going to add enough to make a difference. You can try adding both a Pre One and our XMP100 Amplifier. That combination will give you plenty of output. TL/4523
Customer Service - Q&A
on August 19, 2017

Rigos
from Ca asked:
July 4, 2017
How much gain does this preamp have? What would be the max output voltage of a line level input?
1 Answer
HI Rigos: Only 500mV (spec is in owner's manual), the problem is that it would have doubled the cost and delayed shipment to add a higher pre out. This is a great value but I had wanted to jump it up to 1.5 Volts. Good question, TL/4450
Customer Service - Q&A
on July 13, 2017

Harry
from Atlanta asked:
April 30, 2017
Are the rack ears removable? If not, is there an earless/ear-optional version available/on the way?
1 Answer
Hi Harry: The rack Ears are incorporated in the front face plate. They are not removable. There are no plans for a version without rack ears, sorry about that. TL/4338
Customer Service - Q&A
on May 8, 2017

Pete
from Brew Town asked:
March 24, 2017
Looking to use something like this as a cheap solution for a source switch before an EQ and then power amp. Does this one have a higher output for phono as normal on most receivers?
1 Answer
Hi Pete: This will work perfect for your Equalizer, just connect to the tape loop play/rec. The Phono is a loaded question. This does feature aground connection so it is a true phono input but we like to call this an affordable entry level unit (Cheap sounds like just that... cheap) But it is all relative so it would be an entry level phone pre amp as one of the four sources. We like to add it to our two channel amplifiers to handle the front end. TL/4268
Customer Service - Q&A
on March 25, 2017

steve
from Massachusetts asked:
February 21, 2017
what does this put out as a signal? 1 volt 1.5 or 2 thanks
1 Answer
Hi Steve: .5 Volts or 500 mill amps. In order to increase the voltage output of this design the priice would have more than doubled with the tooling and certification. TL/4226
Customer Service - Q&A
on February 28, 2017

Raymond Sigwart
from Maryland asked:
January 31, 2017
The Front Panel Mic Input. When hooking a microphone to it will I be able to speak and play music from any of the Aux inputs at the same time. Use- Fitness instructor with wireless head set into th e front mic jack and wifi/bluetooth reciever into Aux 1, source ipod.
1 Answer
Hi Raymond: That is the concept, the two channels are mixed at the same time the mic input and whatever input you select either DVD/CD, Aux 1, Aux 2 or Phono. You can set the level for each independently with the Mic volume or master volume that controls the other inputs. TL/4201
Customer Service - Q&A
on February 19, 2017

john rendleman
from rock island illlinois asked:
January 16, 2017
if I use this preamp with a musichall turntable 5.3 ,will I get a hum
1 Answer
Hi John: The Pre1 is an entry level Pre-amplifier that maybe over matched for your turntable. It does feature an internal phono pre amp and ground connection which is supposed to eliminate the hum. Maybe it be worth a try, we do have 30 day performance guarantee (save your packaging). TL/4181
Customer Service - Q&A
on January 19, 2017

Ryan
from Montana asked:
November 4, 2016
Looks like the front panel of the unit is 18.9" wide but how wide is the back of the unit?
1 Answer
HI Ryan: The measurement of the back Chassis is 17 5/8" TL/4109
Customer Service - Q&A
on November 10, 2016

vin
from new york asked:
November 2, 2016
can I use this unit for 2nd channel on my VSX1124
1 Answer
Hi Vin: You can use this with your Zone 2 Pre amp output but will need an internal amplifier as well something like our AMP200 to provide power. The Pre amp only has signal (low) level connection and comes between your Pioneer AVR and the Amplifier. Then depending on what else makes up the rest of your system you may need to add a speaker selector and possibly volume controls to do the impedance Matching in case you do multiple zones. Good Luck Please let us know what else we can help you with for the rest of your system' tim@osdaudio.com TL/4106
Customer Service - Q&A
on November 7, 2016

Ed
from Virginia asked:
October 15, 2016
Is there a remote control?
1 Answer
HI ED: There is no Remote Control for the Pre One. Sorry about that. TL/4094
Customer Service - Q&A
on October 18, 2016

tom
from new orleans, la asked:
September 4, 2016
bluetooth? Do any of the products support bluetooth sound sources?
1 Answer
Hi Tom: We have Bluetooth Rocks, Frogs and Patio Speakers that all feature a Master Speaker and matching Satellite speaker that needs to be connected by a speaker wire. The Master speaker includes Bluetooth Receiver and internal Stereo Power Amplifier. It is connected to the power supply included in the kit. It is a direct connect to a single Bluetooth enabled device. There are a number of choices for external Bluetooth receivers that can be used with our Pre1 as one of the four potential sources. They start on-line at $14.99 and above, would recommend at least a Bluetooth 4.0. Good Luck TL/4049
Customer Service - Q&A
on September 8, 2016

Product Reviews

4.7
12 Reviews
5
67% (8)
4
33% (4)
3
0% (0)
2
0% (0)
1
0% (0)
100% Recommend this product (12 of 12 responses)
By BB3
Southern California
March 4, 2017
An Unbelievable Bargain in Stereo Components
I needed an affordable analog stereo pre-amp for a really old 125-watt (RMS) per channel AB-class power amp that's been packed away for a while. These days not only are preamps rare, they are ridiculously expensive, too. Searching around on the web I found a basic component that had all the necessary functions for under $100. Regretfully, it was hideously ugly with a purple and blue paint job on the front panel. Continuing to search I found its functional twin, the OSD Pre-1, with a conservative black front panel in the style of the great audiophile brands. Even better, it had a lower price. Because I live near the company in Brea, CA, I was able to pick it up and save any shipping charges. It's now hooked up and doing exactly what I need it to, i.e., input several sound sources, modify the tone of incoming signals, and regulate volume. It does all of these things without any quirks or audible flaws. As someone, who has owned a number of golden-ear-quality components, I was amazed by the build quality at this price point. The RCA terminals are gold plated and all of the knobs are real electromechanical potentiometers with detents. Plus, there is a turntable input that handles moving magnet phono cartridges, the most common variety. The flexibility to modify tones to the power amp is outstanding. In addition to simple bass and treble knobs, there are midrange and rotary loudness controls. Granted, these are not the same as a graphic equalizer. However, these features make it possible to subtly "sweeten" the output of any speaker in any listening environment when needed. I'm sure someone will grumble that there is no remote control. However, for a sophisticated, aspiring audiophile looking for maximum performance at a rock-bottom price, this is a non-issue. I noticed on the "Questions" page that there were concerns regarding the output voltage from the preamp to the power amp. In my set up it is not a problem. The preamp's output signal is adequately strong so that the overall system performance can be paint-peeling if the volume is really cranked up.
ProsGreat build quality, features and flexibility.
ConsAudio snobs will ignore this amazing product. Tyros will not understand why it is incredible.
Best UsesHigh-end stereo systems on a budget.
By Andy
Salt Lake City, UT
February 17, 2017
My old pre amp died
I needed pre amp that would allow me to connect modern digital sound to my old Power amplifier. I purchased this pre 1 based on what OSD told me. I really like the function of it, and the sound is nothing less than impressive.
Best UsesLinking a music source to a Power amplifier
By edward becker
Calisle P.A.
February 23, 2018
pleased with quality and performance
Fast shipping
By Mike
St Louis, MO
February 9, 2018
Really good for the price
I'd really like to give this preamp 5 stars, but the volume steps are really annoying. While the unit is everything it should be and more for the modest price, the stepped volume control is ridiculous. One step on the volume is quite louder or quieter than reasonably acceptable. Fortunately for me, I am using this preamp as a cheap interim solution with some Crown amps and they all have controls on the front, so the gain can be controlled on them to make up for the disparity, but changing each when a new song is played is more hassle than it should be. Other than that, this amp is a huge bargain.
ProsExcellent build quality for the money Attractive design Plenty of inputs Excellent value for the price
ConsStepped volume control that is several dB difference between each step
By Roger M Jefferson
Calera, Al
February 7, 2018
Great preamp/Plays well with others
Hooked this unit up and works great. I do get what the guy that complained about the detent on the Volume control knob, but it's better than spending 3x,4x,5x as much for old crap that needs to have the switches cleaned and pot's cleaned and still have problems. Can't go wrong.
By Mr Cee - Ceasar Studio
NYC
January 29, 2018
Unfreekin Believable Pre amp for the price ! Holy Cow
I have owned several pre-amps in the past and this is just an unbelievable component for the price. Pre amps are now expensive and hard to find. I did not see this Component in stores just on the websites with very good reviews and still I was kind of hesitant on getting it, But when I received it I was like WOW ! I hit Gold ! OSD Service was also great.
ProsSolid Buttons, Solid all Metal Component, Tape Loop function for Equalizers - Very Important ! Rack mount, Low Noise. Unbelievable Quality over all.
ConsNot to many inputs, But Im not complaining.
Best UsesRecording Studios, Homes with Power amps.
By Wipeout
S.L.C. UT.
January 22, 2018
Pre-amp
The Pre-amp seems to work well. Gives me more easy access to different sources for Vacuum Tube Power Amp.
By Dr. Mike
UP Michigan
January 21, 2018
Great value
In an era of few budget preamps this one shines. Necessary inputs and controls, nice quality, at a great price. Just wish it had a headphone jack. Ordered directly from OSD--excellent service-fast shipping.
ProsGreat value. Good quality. Necessary inputs and controls.
ConsLacking a headphone jack.
Best UsesBudget vintage stereo resurrection...
By Moose
Amherst, VA
January 21, 2018
Best For Price
I got the Preamp-1 to keep a system going while my Carver preamp is in the shop for repairs. If I were comparing to it, this puts out a third of the volume and more harmonic distortion... not that you're likely to notice. The sound is good, and the controls let you dial in your system the way you like. I've not heard anything close to it in it's price range. If you're on a budget, or just don't want to spend a fortune on a preamp - it's a great deal. There is no sub out on this pre... a set of "Y" cables took care of that. I will keep it even after I get the Carver back as a backup for all of my systems.
By Martin Gamzon
Brooklyn,NY
January 21, 2018
Great sounding pre-amp
I have pre-amp connected to Osd 300 power amp in my bedroom.
ProsCan use the pre-amp in bedroom or living room.Amazing pre-amp for a low price.
ConsWish a remote control came with pre-amp.
By Phil
Augusta, GA
June 10, 2017
WOW what a surprise
Very nice unit. The sound is clean and balanced. Sounds as good as the $1000.00 preamp I had in the past.
ProsSounds like expensive like pre-amps that I have owned and listed to.
ConsThe selector knob pointer is not lined up exactly to the position that is selected. There is slight bleed over between devices on at the same time.when the one selected is silent and the other device is on but not selected. This only occurs when the volume is almost turned up to max. So have the other devices off to make sure there is no bleed over.
By Doug Bowers
Fort Walton Beach, Florida
December 7, 2016
Solid
I have owned a number of both pro and consumer audio products over the past forty years. I am impressed by the quality and performance of this preamp. Total bang for the buck!
Best UsesAny multi component audio system.