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SKU: OSD-AMP200 2-Channel 125W Per Channel, High Current Class A/B Stereo Amplifier Toroidal Transformers - AMP200

Purchase 2-Channel 125W Per Channel, High Current Class A/B Stereo Amplifier Toroidal Transformers - AMP200
  • SKU: OSD-AMP200 high-power-stereo-amplifier

    2-Channel 125W Per Channel, High Current Class A/B Stereo Amplifier Toroidal Transformers - AMP200

  • $299.99

    Compare at: $449.99 You Save $150.00

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A team OSD favorite, the AMP200 is a high current 2-channel amp with loads of features. This amp lets you home run (directly to the back of the amp) two pairs of speakers or 4 speakers total. Since it's high current, you can add up to 4 pairs of speakers (8 speakers total) by adding OSD speakers selectors such as the DSM4. Rated at 80 Watts per channel at 8 ohms, the OSD-AMP200 is overload stable so it's ideal for use anywhere clean power is needed. It also includes a dual source switching circuit. When you connect two independent sources number (say your iPod and a TV in another room) source one takes priority when it is active. When source one is turned off, source number two comes on. Note: You cannot play two sources simultaneously. For this feature you need a multi-channel amp like our MX1260. Step-up features rarely seen in amps of this price range include a built-in voltage meter, and front mounted volume and balance trim controls. 

High Performance, High Current Power 
Rated at 80 watts per channel at 8 ohms, and stable down to 2 ohms, the OSD-AMP200 is overload stable so it's ideal for use anywhere clean power is needed. It also includes a dual source switching automatic circuit. Step-up features rarely seen in amps of this price range include a built-in voltage meter, and front mounted volume and balance trim controls. 

AMP200 offers 80 watts RMS per channel of power, with bridgeable outputs for up to 250 watts RMS. A, B, or A+B speaker selector switches make managing connected outputs easy. And a signal-sensing power on feature lets the amp power up automatically when you power on your source. 

Automatic Source Switching 
The AMP200 can automatically switch between connected sources, thanks to a priority signal-sensing feature. So if you have your iPod connected to input 2, then decide you want to watch a movie, when the DVD player connected to the main input 1 is turned on, the AMP120 will automatically switch to that source. 

A variable delay control lets you adjust the amount of time needed to "listen" for a signal from your main input, between 3 and 15 seconds, so things like gaps between CD tracks won't accidentally switch your inputs. 

Works with Smartphones, iPods, and Other Portable Devices 
Use the AMP200 to connect your Smartphone or other portable music device (as long as you have a headphone jack.) The AMP200 includes two RCA signal level inputs marked as red for right and white for left. Using an RCA-to-mini stereo cable (sold separately), plug the 3.5mm stereo connector into the headphone output of your iPod or other portable device, then connect the RCAs to one of the inputs of the AMP200.

Warning: California's Proposition 65


This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

  • Design Type: Class A/B
  • Peak Power Output: 200 Watts per channel
  • Maximum 8 ohm stereo output power at less than 0.2% THD+N: 80W
  • Maximum 4 ohm stereo output power at less than 0.2% THD+N: 125W
  • Maximum 8 ohm Bridged-Mono output power at less than 0.2% THD+N: 250W
  • Frequency Response: (20Hz to 20kHz) +0.0dB, -0.5dB
  • Impedance: 8 ohm to 2 ohm stable
  • Signal to Noise Ratio: -103dB referred to rated power at 4 ohms
  • Turn on options: maunal on, signal sensing, and 12V Trigger mode
  • Unique Automatic Dual Source Priority Switching with Speaker Level Input Option
  • Input and Output Terminals: Interrupting line input, main input/output, 12V trigger, speaker zone A output, speaker zone B output, RCA input (4 total)
  • Rack Mountable? Yes
  • Dual Source Switching? Yes
  • Dimensions (W x H x D): 16.5" x 3.5" x 13.5"
  • Weight: 30 Lbs
  • Warranty: 2 years
129 Questions asked
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What's on your mind?

luiz cocozza • 12/17/2019, 2:17:43 PM Hi is this amp made for ooutdoor use, is it weather resistent?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Luiz: No it is not meant for direct exposure to the elements, you would need to keep it in a dry secure place. You might have issues with weather and humidity found in Orlando. TL/4819
Justin • 12/17/2019, 2:17:43 PM Can I use this amp to drive a single pair of speakers (Bowers & Wilkins AM-1s) with a mono signal? My source is a Sonos Connect which outputs a stereo signal. I'd like to hook the Sonos Connect output up to this amp, and convert the stereo to mono for driving two speakers. Will that work?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Justin: The only issue I see is the Mono signal you want for each speaker. Even though you have a Mono-Stereo switch on the AMP 200 it is critical that the output (the two positive from Speaker A) see an 8 ohm load which would work with one speaker only. By adding the second speaker in parallel from speaker A output it would become a 4 ohm load. Not advised for bridged output (You can only bridge one output, 8 ohm critical). I am assuming you want mono signal so you can place the B n Ws farther apart than is recommended for stereo. One option would be to add our Pre One pre amplifier after the SONOS and before the AMP200. The Pre amp allows you to change the signal to mono before it gets to the AMP200 and you hook up the speakers right and left as normal. The Pre amp also provides knobs to adjust High-Tweeter, Mid range, Low-Bass and Loudness compensation as well as 4 sources including Phono input. You also have a master volume control as well and can add a microphone mix. Another idea would be to add a second pair of B n W outdoor speakers providing more coverage and could be in stereo (or mono with the Pre one). The key here is that the AMP200 really likes to drive 2 pair of 8 ohm speakers so it operates at 4 ohm load increasing the output power (from 80W to 125W). You could do it in stages moving the initial pair closer and running in stereo and pre wiring for a third and fourth speaker placed outside the initial two. You would wire right, left, right and left. Note if you do add the Pre One, connection to AMP200 would be to the Line 2 input. If you need further clarification, TL/4912
Darren • 12/17/2019, 2:17:43 PM I am currently running an Onkyo receiver with a powered Zone 2 built in. From Zone 2, I have about 150ft of wire running to an OM SUB200. Off the sub, I have 4 speakers, 2 off each satellite feed wired in parallel. There is a FS525 followed by RX640 on each line. If I wanted to turn off the power on the receiver for Zone 2 and add an amplifier, would this be the correct fit for the layout?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Darren: The AMP200 would be a perfect am,p for your application. Connect the AMP200 to the Pre AMP Zone 2 output to the ONKYO. Connect to the Line 2 input of the AMP200. Then speaker A out to the OMSUB200. Sounds like you already have the FS525 and RX640 connected to the output of the OMSUB200. The AMP200 is a High Current Amplifier that is 2 ohm stable. Technically you are connecting three 8 ohm loads in parallel with the two pair of speakers (frogs and rocks) and the OMSUB200 which would produce a 2.6 ohm load. You will definitely get your monies worth. TL/4945
daryl • 12/17/2019, 2:17:43 PM I need an amp to power 6 outdoor speakers - Yamaha NS-AW150BL 2-Way Outdoor Speakers - 120 watts maximum power capacity, 35 watts nominal. I think they are 6 ohms. These six speakers are each spaced about 50 feet apart in a straight line along my property line - each speaker is in a "birdhouse" and 5 ft. off the ground. I (will) have buried a total of 1000 ft of your 14 Gauge 2-conductor Oxygen Free Burial Rated In-Wall Speaker Cable CL3(JA-14-2-500). I currently buried 500 ft for four speakers and have conduit in the trench to fish more wire through, in order to add another pair - this final pair would require about 500 feet. Since I have not bought this wire yet, what gauge would recommend and what gauge would fit the amp's terminals? I bought 14 Gauge thinking I would be using a cheap speaker selector and its terminals didn't accept 12 gauge. But now I plan to use an amp and not use a speaker selector at all. I want to be able to play all six at the same time, LOUD. My goal is to drown out a neighbor's barking dogs when needed. There's a 10-acre yard between us and the dogs are just loud enough to annoy us - not super loud... Probably won't be playing music, just some kind of natural sound, probably streamed from YouTube. What amp do you recommend? I will have a dedicated receiver for this purpose only but not sure what receiver I will use yet - I have a new Pyle Stereo Amplifier Receiver 200 Watt (PDA6BU)(Max Power Output: 200 Watt at 4 Ohm) or my old Yamaha Receiver HTR-5640. Hopefully one of those would work? Btw, I am not at all an audiophile - "ohms" is like a foreign language to me...
Customer Service • 12/17/2019, 2:17:43 PM
Hi Daryl: I believe the AMP300 would be your best bet for your application. I would also suggest adding our newest updated Pre-one preamplifier for two reasons. First, the Pre_one now has a1.5 Volt output which is three times increase in signal strength to the Amplifier (the AMP300 in this case). Even though the AMP300 has a Stereo/ Bridged Mono switch you are limited to a single 8ohm pair of speakers when in the bridged mode. Your application calls for a mono signal since your speakers are a minimum 50 feet apart. The AMP300 is stable down to 2 ohms. So you can connect three pairs of 8-ohm speakers for a 2.6-ohm connection. The Yamaha at 6 ohms maybe a bit of a challenge but I believe it should still work. The Pre One features a stereo-mono switch. So the signal into the AMP300 would be a full range for both the right and left channel outputs. So you would connect two pairs to the Speaker A and one pair to Speaker B. You would connect both right and left channels. Neither the Pyle nor Yamaha have the stereo or mono switch. The Pyle does have a preamp out so can be connected to the AMP300. The Yamaha does not appear to have pre-amp outs. The 14 AWG should work perfectly throughout. The AMP300 will accept up to 12 AWG. And accepts banana plugs. I would have recommended our AP650 for your application as well. Let me know if you need clarification, TL/5008
Kevco • 12/17/2019, 2:17:43 PM When running two pair of speakers on the amp, can the volume be controlled for each pair separate? Can A be louder then B?
Customer Service • 12/17/2019, 2:17:43 PM
HI Kevco: There are master level controls on the back but just for right and left separation on Speaker A versus Speaker B. In order to control the volume you might consider adding a Volume Control for both A and B. The Volume Control is an attenuator that adds no gain but in fact turns your sound down by diverting signal to the Autoformer. These are the Impedance Matching Volume Controls like our indoor Rotary style (SVC), Slider style (VMS) or Rotary knob (OVC-Outdoor). There is a trade off for adding Impedance Matching protection where the frequency response is not as wide. So we do have Resistor based Rotary and Slider style that does not have Impedance Protection but a wider frequency response with no high or low end roll off. These would be better for your application since the AMP 200 has no problem with a 4-ohm load that happens when you play speaker A and speaker B at the same time. Check out the VKR120. TL/5018