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    SKU: PRE-1

    OSD PRE1Preamplifier, Phono Ready, Home Theater, Surround Sound, Recording

    Purchase OSD Preamplifier, Phono Ready, Home Theater, Surround Sound, Recording - Pre-1
    • Outdoor Speaker Depot SKU: PRE-1 osd-preamplifier-preamp-pre1
    • In Stock


      Compare at: $179.99
      You Save: $60

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    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 dog barking, 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 is 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.

    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 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 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 '' 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 Pre-Amplifier is as solid as it gets.

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

    Warning: California's Proposition 65


    This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to

    Input Sensitivity/Impedance
    • Mic 0.5V/600 Ohms 
    • Phono 3mV/47k Ohms 
    • Tape,Tuner, CD/DVD, Aux 150mV/47k Ohms 

    Output Level/Impedance 
    • Tape Rec 150mV/100k Ohms 
    • Pre Output 500mV/47k Ohms 

    Total Harmonic Distortion 
    • Mic less than 0.4% 
    • Phono less than 0.4% 
    • Tape,Tuner, CD/DVD, Aux less than 0.2% 

    Signal to Noise Ratio 
    • Mic more than 50dB 
    • Phono more than 70dB 
    • Tape,Tuner, CD/DVD, Aux more than 80dB 

    Frequency Response 5Hz - 30kHz +0 -3dB 

    Tone Control 
    • Bass ± 12dB @ 100Hz 
    • Midrange ± 6dB @ 1kHz 
    • Treble ± 12dB @ 10kHz 

    Loudness Control: +4/0/+2dB @ 100/1k/10kHz 
    Power Requirements: AC 120V 60Hz / 220V 50Hz 
    Dimensions: 18.9" x 2.36" x 8.25
    44 Questions asked
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    What's on your mind?

    Rigos • 12/17/2019, 2:17:43 PM How much gain does this preamp have? What would be the max output voltage of a line level input?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    tom schmidt • 12/17/2019, 2:17:43 PM 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
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Hans • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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; TL/4725
    Tom Finn • 12/17/2019, 2:17:43 PM 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
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Steven Voet • 12/17/2019, 2:17:43 PM I recently purchased the Preamp-1, and it functions beautifully. However, there is one minor issue. There are six small control knobs, and on the unit I received the white indicator marks on the knobs do not match. Three knobs have rather thin marks, and the other three have marks that are about three times wider. It's noticeable from across the room. Is it possible to get three replacement knobs (either thin or thick) so that all the knobs match? Thank you.
    Customer Service • 12/17/2019, 2:17:43 PM
    HI Steven: Send us an image of the unit. Which do you like better the three thin or the three wide. We can check for any defective or possible b stock to see if we can come up with three knobs that would match. Please send me the the image at I can not guarantee we will find the right replacements but will try our best. TL/4780