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    SKU: HTX-4150

    OSD Nero HTX41504x 175W Home Theater Amplifier Highly Flexible, High Power Bridging with Passive Subwoofer Controls, 105 dB SNR

    Purchase OSD 4x 175W Home Theater Amplifier, High Power Bridging with Passive Subwoofer Controls, 105 dB SNR
    • Outdoor Speaker Depot SKU: HTX-4150
    • In Stock

      $762.99

      Compare at: $1143.99
      You Save: $381

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      FREE Delivery by Tuesday, May 27
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    • AUDIOPHILE, CLASS D HOME THEATER OR OUTDOOR AUDIO AMP: A powerful and affordable 4-channel, fan cooled, Class D amplifier rated at 4x175 Watts (4 ohms), 100W (8 ohms), all channels driven.
    • Adjacent channels can be bridged, to provide 2 x 400 watts, 8 Ohms or 1 x 400 watts and 2 x 175 watts.
    • Two of the channels can be bridged and used as a subwoofer amp with frequency x-over and level control.
    • Hi-Fi AUDIO: RCA connections ensure a seamless setup.
    • 12V TRIGGER: Control for remote power on/off.
    • INDIVIDUAL CHANNEL LED’s: displays the amp’s status - ON, Standby, or Protection mode.
    • 105 dB SNR: at rated power, for exceptional dynamic range.
    • Ground terminal to help troubleshoot hum issues.

    Audiophile, high-powered, low-noise and distortion, 4-channel amplifier.

    Highly configurable, 2, 3 or 4 channels with subwoofer controls. Fan assisted, cool-running Class D design that can be used in confined spaces such as a rack or credenza. Switching power supply provides excellent rejection of RF from nearby electronics or mains. This is the ideal home theater amps for use in less than perfectly ventilated spaces.

    This is also the perfect amp for an outdoor system that comprises main speakers and a passive subwoofer. 400 watts is available to power a subwoofer and 175 watts for each of two patio speakers.

    The HTX4150 can easily achieve the reference cinema sound levels of 105dB from all channels. The HTX4150 is rated at 175 Watts per channel, all channels driven (not just one channel, as stated by most competitors) into 4 Ohms. Used with typical speakers, this allows for a sound-pressure level of 109-112dB, 4-7dB more than required for reference sound levels. The additional dB’s means the amplifier is working well within its normal range, and this keeps the distortion low. (A good example of this is turning your TV up too much - it does not sound good. This is because the closer you get to full power the higher the distortion.) With this amplifier at 105dB, the distortion is below 0.02%.

    By choosing the best components, we can also achieve 105dB SNR at full power. This allows for a very wide dynamic range, allowing you to hear the softest and loudest sounds more clearly. This combination of performance specifications is hard to find from any amplifier, regardless of price. By choosing an OSD HTX amplifier, you have achieved the goal of great performance at an affordable price.

    • 175 watts per channel into 4 ohms (10-30,000 Hz) at <1% THD with all 4 channels driven.
    • 100 watts per channel into 8 ohms (10-30,000 Hz) at <1% THD with all 4 channels driven.

    Warning: California's Proposition 65

    Warning: 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 www.P65Warnings.ca.gov.

    • OUTPUT POWER (RMS) @ 0.1% THD (Single Channel):
      • 4 Ohms: 150W
      • 8 Ohms: 85W
    • OUTPUT POWER (RMS) @ 1% THD (Single Channel):
      • 4 Ohms: 200W
      • 8 Ohms: 120W
    • ALL CHANNEL OUTPUT POWER (RMS) @ 0.1% THD:
      • 4 Ohms: 130W
      • 8 Ohms: 75W
    • ALL CHANNEL OUTPUT POWER (RMS) @ 1% THD:
      • 4 Ohms: 175W
      • 8 Ohms: 100W
    • Bridged Rating (RMS) @ 1% THD (Single Channel):
      • 8 Ohms: 400W
    • Frequency Response: 10-30kHz
    • Signal to Noise Ratio (A-weighted): 105 dB
    • Damping Factor (1kHz, 8 Ohms): 90
    • Idle Current: 0.18 Amps
    • Max Current @ All Channels Rated Power: 5.9A
    • Efficiency of Amplifier: 88%
    • Amplifier Type: D
    • Transformer Type: SMPS
    • Air-Cooled or Fan-Cooled: Fan
    • 12 Volt Triggers: Yes
    • Auto-On Sensing: No
    • Sub-Out: Yes
    • Power Supply: 115V, 230V or 110-230V
    • Rack Mountable: Yes
    • Dimensions: (LxWxH): 15.16" x 16.73" x 3.46"
    • Weight: 22 Lbs
    • Certification: CE/UL
    • Warranty: 2 Years
    We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.
    4.8
    Out of 5.0
    A graph showing this site's review totals.
    Overall Rating
    97%
    of customers that buy
    from this merchant give
    them a 4 or 5-Star rating.
    Verified Buyer
    May 18, 2025 by Ethan (United States)
    “Big selection wish there was more selection for premium rca cables for subwoofer instead of the dual RCA to 3.5mm input jack.”
    Verified Buyer
    May 16, 2025 by Ken (United States)
    “easyt”
    Verified Buyer
    May 12, 2025 by Philip (United States)
    “I am a new customer. I was looking for wire that wasn't copper coated aluminum, and didn't come from China , Found it here. I signed up for newsletter but didn't receive PROMO code. Called phone number and they gave me a code. Cool. Also no shipping or tax charges, even better.”

    No Questions asked yet!


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