Product Search

    Secure Checkout
    Your Shopping Cart Is Empty

    Secure Checkout

    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

    • Countdown Truck
      FREE Delivery by ,
      Order within hours and minutes
      Change Shipping Zip ? Free Shipping Over $50
      More Delivery Options

    Lifetime Tech Support


    Lifetime Tech Support

    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
    Have a Questions?

    What's on your mind?

    George • 12/17/2019, 2:17:43 PM Hi, I have a AV receiver 5.2. But when I play my Bluetooth turntable. The music sounds flat. Would this preamp help to make the sound fuller? Also how would I connect it? It has a preamp in
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi George: I am a little confused about your system. Do you have a Bluetooth Turntable that has a built-in Bluetooth Transmitter that is sending a wireless audio signal to your 5.2 AV Receiver? And this is the sound you feel is to flat? If correct, then the Pre-One would not work for your setup. So you can tell me more about the actual system, I could see if I can give you a better answer. TL/5396
    Ty • 12/17/2019, 2:17:43 PM Would this work to replace a Kenwood Basic C2 Preamp? Looking for a temporary replacement while the Kenwood gets repaired. Any help would greatly be appreciated.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Ty: The Pre-One will work for your application, a substitute for the money. It only has one less Tape loop and no headphone output. It does have bass and Treble plus Loudness. It does have a midrange control, unlike the Kenwood. The Kenwood looks like a well-built unit. The Phono input of the Pre-One is limited to an MM (Moving Magnet Cartridge) phono preamp. It will not work with an MC (Moving Coil Cartridge). TL/5403
    Vince • 12/17/2019, 2:17:43 PM Hi, I'm planning to buy this for my home in Japan. Is it compatible with 100V 50Hz ? Thank you
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Vince: The Pre-One has a switching Power Supply that will work 110 to 240 Volt. I am still waiting to hear back from our Engineers about the effect of using the stereo mono switch on the XMP100. The Pre One does have a Mono stereo switch so the input signal to the XMP100 would already be full range mono range. TL/5413
    Dustin • 12/17/2019, 2:17:43 PM Hello, I have this preamp and the osd amp 200 driving four Bose 251’s and two monoprice outdoor speakers out by my pool. This is being fed into a niles ssvc-6 speaker selector and volume controller from the osd amp 200. I want to add your smp500 to the mix so I can power two of your unground subwoofers. How do you recommend that I connect the smp500? I will mostly be using an Apple airport express as my source, and ultimately be using the volume control built into the phone to control the volume, since the media cabinet is in my garage. Will this cause any issue with the volume when everything is put together?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Dustin: You have a couple of choices where to connect the SMP500. You mentioned you have two pair of BOSE and a pair of Monoprice outdoor speakers. I am assuming each pair of outdoor speakers connect to a dedicated Zone of the Niles SSVC6 Speaker Selector. And you most likely have speakers connected to the other three zones. The first option is to join the SMP500 to the Line 2 Output of the AMP200 using an RCA Stereo Patch cable. Whatever plugged into Line 2 Input will pass thru to Line 2 Output. This will work if all you have connected is Line 2 Input and nothing plugged into Line 1. There is no dedicated on/off for Line 2, and it will play even if you have something playing from Line1 that takes priority over Line 2 Input (if your Source is still playing). The second option involves wiring from Speaker B to Speaker Level input on the SMP500. You have the B switch on the front of the AMP200 allowing you to turn the subwoofer off when your not playing your outdoor speakers. You can use 14 gauge to connect the AMP200 to the SMP500. But use 12 gauge to connect to the two inground Subs. If you need further clarification; TL/5415
    Bill • 12/17/2019, 2:17:43 PM When will the Pre amp1 be back in stock?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Bill: Our shipment will be here by Mid May. Sorry for the delay. TL/5451