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Douk Audio G7 2.0/4.0 Channel Digital Amplifier Review

A dual-TPA3255 power amplifier delivering up to 300W x 2 or 150W x 4, with two sets of speaker outputs for A/B testing or dual zones, XLR/TRS combo and RCA inputs, and retro blue VU meters.

3.83.8 out of 5 starsUpdated October 14, 2026
$299.99Price checked October 14, 2026
Check price at Douk Audio
Douk Audio G7 2.0/4.0 Channel Digital Amplifier

Our verdict

The Douk Audio G7 is a heavyweight for $299.99: dual TPA3255 chips for 300W x 2 or 150W x 4, two speaker output sets for A/B switching or dual zones, balanced XLR/TRS and RCA inputs, and a 48V/10A GaN module inside. The Bypass mode turns it into a pure power amp for critical listening, and the retro blue VU meters keep the desk lively. Mind the bypass-mode warning and the battery-less remote.

Best for
Driving two speaker pairs from one amp — A/B comparisons, dual zones, or a high-power 2.0/4.0 setup fed by a quality DAC or streamer
Skip if
You want adjustable VU lighting, or you plan to lean on Bypass mode without controlling the source volume first
Check price at Douk AudioHow we research

The Douk Audio G7 is a 2.0/4.0 channel digital amplifier priced at $299.99. It is built for flexibility first: two sets of speaker outputs can be switched or run simultaneously for A/B testing or dual-zone setups, making it a speaker selector as much as an amplifier for bookshelf and floor-standing speakers.

At the core are two TPA3255 chips delivering up to 300W x 2 or 150W x 4, powered by an internal 48V/10A GaN power module for efficient delivery, and mastered by an NJW1194 IC and OPA1612 op-amps. Inputs include a balanced XLR + TRS combo plus dual RCA, described as a match for high-performance DACs and streamers.

Tone and control are unusually deep. There is ±10dB of bass and treble shaping, along with a Bypass mode that disables the tone and volume circuits to give the uncolored, original signal path of a pure power amp. Large retro blue VU meters with AGC provide real-time visual feedback, and modern conveniences include a 12V trigger for synchronized power, full-function remote and instant mute.

The maker documents two cautions. In Bypass mode both volume and tone control are unavailable and the amplifier is set to maximum by default — lower the source volume before switching to prevent hearing or speaker damage. The remote control may not include batteries (AAA x2) for safer, faster delivery, so have two ready. It is recommended to use 4-8 ohm speakers with matching impedance per channel — for example two 4 ohm speakers on channel A and two 8 ohm on channel B. The 12V trigger input is for syncing power with a preamp or DAC, not for audio or a power supply.

Shipping is worldwide with free and expedited options, and cost varies by country. Under 2kg ships airmail in an estimated 10-25 days; heavier orders move to DHL, UPS or FedEx in 5-8 days. Import duties and customs fees are the customer's responsibility. Free 30-day returns with a full refund and a 1-year warranty apply to all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything else outside the warranty terms.

What we liked

  • Two TPA3255 chips deliver serious output — up to 300W x 2 in stereo or 150W x 4 across four channels
  • Two switchable or simultaneous speaker outputs make it a speaker selector for A/B comparisons or dual-zone listening
  • Pro-grade connectivity with balanced XLR + TRS combo and dual RCA inputs, suiting high-performance DACs and streamers
  • Bypass mode disables the tone and volume circuits for the uncolored signal path of a pure power amp
  • Large retro blue VU meters with AGC, plus a 12V trigger, full-function remote and instant mute

Worth noting

  • Bypass mode disables both volume and tone control and sets the amplifier to maximum — lower the source volume before switching to avoid damaging hearing or speakers
  • The remote control may ship without AAA batteries for safer delivery, so prepare two yourself
  • The VU meter brightness and color are fixed and cannot be adjusted

Questions before you buy

Is volume control available in Bypass mode?

No. In Bypass mode both volume and tone control are unavailable and the amplifier volume is set to maximum by default. Lower the source volume before switching to this mode to prevent hearing and speaker damage.

What speakers should I connect?

It is recommended to use 4-8 ohm speakers with matching impedance for each channel — for example, two 4 ohm speakers for channel A output and two 8 ohm speakers for channel B output.

Does the remote include batteries?

The remote control may not include batteries (AAA x2) for safer and faster delivery, so prepare them yourself.

What are the shipping and warranty terms?

Worldwide shipping with free and expedited options; under 2kg ships airmail (10-25 days), over 2kg by DHL/UPS/FedEx (5-8 days), with import duties paid by the customer. Free 30-day returns for a full refund and a 1-year warranty apply, excluding orders by mistake, misuse, change of mind and anything outside the warranty terms.

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