Douk Audio EQ7 7-Band Audio Equalizer Preamp with Balanced XLR Output Review

The Douk Audio EQ7 is a 7-band stereo equalizer and preamp priced at $119.99. It slots into a HiFi chain to tailor sound to your speakers, music and room, offering seven adjustable bands from 32Hz to 10kHz with +/-10dB per band so you can add or trim bass weight, vocal body and treble detail.

Its distinguishing feature is balanced conversion: the EQ7 takes an RCA input and actively converts it into a true balanced XLR output with positive and inverted signal phases. That bridges classic RCA sources - DACs, CD players, streamers - with balanced HiFi amplifiers and powered speakers through a cleaner, lower-noise signal path. RCA and XLR outputs both carry the EQ-tuned signal simultaneously, and a volume knob keeps final level control close at hand.

Two large analog VU meters follow the music with brightness, speed and gain controls so you can match the meter response to your source level. Around the back there is rear-panel VU sensitivity and range adjustment if the needle response is too strong or weak. The compact chassis uses a CNC-machined aluminum front panel, aluminum body and gold-plated I/O connectors, and it fits desktop, bookshelf or rack systems. Power comes from the included USB-C adapter; Douk Audio advises using that included power supply rather than a substitute.

Douk Audio ships worldwide with free and expedited options; costs vary by country. Parcels under 2kg ship airmail (10-25 days), heavier orders by DHL, UPS or FedEx (5-8 days), and any import duties or customs fees are the customer's responsibility. The store offers a 30-day free return or full refund and a 1-year warranty on all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything outside the warranty terms.