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    SKU: OSD-AMP300

    OSD AMP3002-Channel 350W Per Channel, High Current Class A/B Stereo Amplifier Toroidal Transformers

    Purchase 2-Channel 350W Per Channel, High Current Class A/B Stereo Amplifier Toroidal Transformers - AMP300
    • Outdoor Speaker Depot SKU: OSD-AMP300 stereo-amplifer
    • In Stock


      Compare at: $665.99
      You Save: $316

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    A heavy-duty 350-Watt A/B two-channel dual source amplifier for use as a remote or single amplifier.

    • Ideal for powering whole-house audio system or dedicated home theaters
    • Equipped with 350 Watts per channel peak power, 470 watts Bridged Mono into 8 ohms
    • Dual source capable for greater listening flexibility
    • Clean, brushed metal front panel with a volume control, power on/off button and balance control
    • Protection circuitry safeguards the amp from a short circuit
    • Can be configured as bridged or stereo amp
    A solid high-power amplifier does more than make the sound you love louder. A well-built power amp cleans up sound quality, improves bass response and delivers the right amount of power to efficiently drive multiple speakers in distributed audio system or home theater. Our AMP300 is a flagship amp that sells well for a reason. This 350-Watt A/B two-channel dual source amplifier is ideal for use as a remote amplifier to power your whole house audio system or as a single amp for a dedicated home theater or media room, and you won't find an amp with the same features that we pack in at such an affordable price. It is stable at 2 ohm load.

    Dual Source Switching
    The AMP300 also includes dual source switching to connect two audio sources and toggle between them for greater listening flexibility. Automatic source switching switches between connected sources with a priority signal-sensing feature, so if a DVD player is connected to input 2, then you decide to stream a movie through a game console, when the console is turned on, the AMP300 automatically switches to that source. The AMP300 also includes a variable delay control that lets you adjust the amount of time needed to "listen" for a signal from your main input, between 3 and 15 seconds. This prevents gaps between music tracks from accidentally switching your inputs. This high power amplifier includes two RCA signal level inputs so with the addition of an RCA-to-mini stereo cable (sold separately), you can connect your smartphone or other device.

    Plenty of Power for the Price
    Pair our AMP300 with the power-hungry speakers, and the sound quality will transform your listening experience. Rated at 350 Watts per channel peak power (470 Watts Bridged Mono into 8 ohms), the AMP300 can be configured as bridged or stereo. In bridged mode, you can combine the left and right channels into one audio channel which bumps up the power to a whopping 470 Watts (8 ohms). When playing dual sources, switch to stereo mode which reduces the power to 350 Watts per channel. It is the only high current 2 ohm load stable amp in the market.

    The AMP 300 also includes two sets of speaker outputs with front panel controls, auto-on signal sensing or 12-volt trigger, rear panel master level controls, dual line-level inputs with priority override switching and dual voltage of 110V/220V and auto signal sensing. This amp has a clean, brushed metal front panel with a volume control, power on and off button and a balance control knob to adjust the balance between the left and right channels and dial in just the right sound level mix. Special protection circuitry safeguards the amp from a short circuit.

    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

    • Design Type: Class A/B
    • Peak Power Output: 350 Watts per channel
    • Maximum 8 ohm stereo output power at less than 0.2% THD+N: 150W
    • Maximum 4 ohm stereo output power at less than 0.2% THD+N: 235W
    • Maximum 8 ohm Bridged-Mono output power at less than 0.2% THD+N: 470W
    • 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: manual on, signal sensing, and 12V Trigger mode
    • Unique Automatic Dual Source Priority Switching with Speaker Level Input Option
    • Automatic source switching
    • High Output Toroidal Power Supply, High Capacitance and Ample Internal Heatsink
    • Input and Output Terminals: Interrupting line input, main input/output, 12V trigger, speaker zone A output, speaker zone B output
    • Rack Mountable: Yes
    • Dual Source Switching: Yes
    • Dimensions (Lx H x D): 16.5" x 5.25" x 14"
    • Weight: 40 Lbs
    • Warranty: 2 years
    136 Questions asked
    Have a Questions?

    What's on your mind?

    Bevilo • 12/17/2019, 2:17:43 PM I'm shopping for an amp with more power than my 25 year old Onkyo receiver amp. It sounds good with the six (3pairs) ACE-640 speakers but I want to eventually do as many as 10 rooms. Is this the right amp for me? Can you recommend a speaker selector too? I have an OSD-SSVC6-D300 dual source 6 zone impedance matching speaker selector with volume controls. I quickly realized that I love the volume controls in each room so I am also running your VMS-300 slider impedance matching volume controls. Is it okay to run volume controls at the selector and the room? It seems to be working for me but I do want to eventually aquire a 10 room selector. As my sytems grows what is the rule for the settings on my slider impedance matching controls, 16x,8x, 4x or 2x? Your assistance is really appreciated.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Bevilo, Our AMP300 is sold in 6 and 8 zone kits and will be able to handle up to 8 pairs. This is an excellent high current amplifier for multi-zone applications. The SSVC6 speaker selector has impedance-matching that cannot be turned off due to the volume control function; therefore, the VMS300 volume control will not do the impedance matching for the system. Be sure to set the volume controls to the lowest setting (1/2X) , which will allow the speaker selector to do the impedance matching. I hope this helps! CL/MA
    Darryl • 12/17/2019, 2:17:43 PM can you daisy chain this amp
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Darryl, With an 8-ohm system, each speaker should have a direct channel (home run) back to the amp or speaker selector rather than wiring them together (daisy chain). This is better for sound quality as well as power output. Technically, you can wire two pairs in parallel to each of the channels, but we do not recommend more than two pairs. If your application calls for one big daisy chain of speakers, consider a 70V system. Take a look at our PA-90; this is a 70V amp. Most of our speakers come with a 70V option as well. If you tell us more about your system, for instance the total number of speakers, we can make further recommendations. CL/MA 1231
    SEUNG WON EO • 12/17/2019, 2:17:43 PM Does this amp work in 220v areas? Also is it connectable to preamp? I have a pioneer spec-1 preamplifier which needs power amp to drive headphones and speakers. Thats why I plan to buy this amplifier. Is there someone who can let me know?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Seung, This power amplifier is multi-voltage and will work in 1150 or 230V. On the back of the unit, there is a red switch, just to the right of the power plug. Simply select 230 and connect into an adapter plug for your corresponding area. TL/MA 1264
    Kory • 12/17/2019, 2:17:43 PM I am finishing my basement, and trying to figure out best set-up for speakers, equip, etc. I plan to have roughly 6 different zones (living room, bar area, 3 bedrooms, and outdoor). After running my speaker wires, how do I set-up from there? Do I need a receiver and an amp? I assume I hook up all speakers into amp, and then that hooks up to receiver? Also, where does my speaker selector fit in....where is that wired? Do I need a certain type of receiver to handle this many speakers and zones? HELP.....I'm obviously a novice!
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Kory, The speaker selector goes with the amp and receiver. Take a look at our 6-zone kit in 'whole house audio, then 'multi-room audio.' Basically, you run the speaker cable from the speaker to the volume control for each zone. Everything is then connected to the speaker selector which is connected to the amp, and the receiver is the audio source—all in one general location. Call or email us for more advice or if you have more questions. - 1.888.779.4968 CL/MA 1288
    Ken • 12/17/2019, 2:17:43 PM I am looking at setting up indoor and outdoor speakers at a golf course. I am looking at 4 ceiling Ice 650 speakers inside the golf shop and 4 AP 650 speakers outside on patio by putting green. I want an amp that has ability to power good volume (not just background level) for special events outside and also be able to have three volume zones to control sound levels. Would the AMP 300 be best option or something else? Also what other accessories will I need?
    Customer Service • 12/17/2019, 2:17:43 PM
    Ken, For up to 8 speakers total, you can use the AMP200 with the DSM4 and 4 volume controls (inside svc300 and outside ovc300). This would give you all the volume you are looking for. Each volume control is a 12-step knob style. CL/MA 1290