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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?

    Ken • 12/17/2019, 2:17:43 PM Hi,I'm looking to purchase the OSD AMP300,because my old Denon Receiver is starting to show it's age ! I am running 4 pairs of speakers with the Denon and the OSD SSVC4 . If I buy the AMP300 what do you suggest I use for BASS and TREBLE Control ? I will be running SAT Radio,CD Player, and TV. As you know, SAT Radio has it's audio limitations compared to CD's,so at the very least I need some form of EQ Management . Thanks Ken
    Customer Service • 12/17/2019, 2:17:43 PM
    Hello Ken, The AMP300 will do a great job supplying power to those speakers. As for bass/treble control, it doesn't have that. You could always run a pre-amp or equalizer to the amp.
    Vijay • 12/17/2019, 2:17:43 PM Hi. I have 50W ceiling speakers in 4 rooms (2 speakers in each room, total 8 speakers). I need assistance finding the right Amplifier to play music in my home speaker systems. All the speakers are pre-wired to a central location tobe connected to an amplifier. Each room has a separate audio controlling system. Please help me find the right system. FYI - I have separate 5.1 ONKYO Receiver (TX-N616) for home theater system in another room.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Vijay, You can run the AMP200 into a 4-zone speaker selector such as our ISS4. You can connect the AMP200 to your ONKYO receiver zone 2 or pre-amp out if you want to play it throughout the house.
    Chris • 12/17/2019, 2:17:43 PM I am looking for an amp to power 2 pairs of Klipsch RP-160M speakers (100W/400W, 8 Ohms and a powered sub woofer, BIC Acoustech PL-200). This will be set up in a large timberframe great room (35'x25' with 20' ceiling) where the sub will be shared but I want to be able to run the speakers either as A or B or A+B. Audio signals will come primarily via AirPlay, so the amp either needs to have ethernet/wifi or be connected to an AirPlay device such as Apple TV via HDMI or optical. I would really like to avoid a full featured AV receiver with 10 HDMI connections etc. Seems total overkill. Is there a simpler way to meet my needs?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Chris, This amp can do A or B and A + B but it is analog so it doesn't have any wifi built in. Great amp though - it's high current so you can run up to 3 pairs of 8ohm speakers off each zone.
    dana • 12/17/2019, 2:17:43 PM i read some of the other questions, and i have a similar issue as, ken from bc. but when i ran the eq from the amp as suggested my sound kept cutting out. unless i turn the volume up all the time when i lower the volume i believe the signal is getting cut, voltage wise and causing the internal switch to activate. any suggestions, or jut take the eq out and have no bass treble control??
    Customer Service • 12/17/2019, 2:17:43 PM
    HI Dana: Which Equalizer are you using (Brand, model number)? How are you connecting it? Most EQ's would come before the amplifier after the source. You mentioned it being after the AMP. With a little more info I may be able to answer you better. Thanks TL/3673
    nic • 12/17/2019, 2:17:43 PM If i connect this to a home theater receiver and set the volume on the amp at max, Will the volume then be controlled up and down by the receiver?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Nic: Yes, there are gain controls that allow you to set the AMP300 levels to the optimum listening levels then you actually control the volume up and down from your receiver. Which might depending on your receivers app be controlled from you smartphone of tablet. TL/3681