Audio & Entertainment · Speakers
Five bands. One warm tube.
A HiFi preamp and equalizer with independent control over five frequency bands (64Hz, 236Hz, 1KHz, 4KHz, 16KHz) plus left/right balance adjustment. A pluggable 6N3 vacuum tube adds warmth to the signal, and balanced XLR alongside RCA inputs and outputs feed an amplifier, active speakers, or headphones (16-300 ohm) through the 3.5mm output.
Audio & Entertainment · 5-BAND EQ · 6N3 VACUUM TUBE · XLR/RCA I-O
DOUK AUDIO Vacuum Tube 5-Band Audio Equalizer with XLR Preamp Outputs
A vacuum tube preamp with 5-band EQ and balanced XLR outputs for a hi-fi system or headphone rig.
Precise Tone Shaping
5-Band EQ with Balance Control
Independent control over five frequency bands plus left/right balance lets you fine-tune the sound field to the room.
Tube-Warmed Signal
Pluggable 6N3 Vacuum Tube
A classic pluggable vacuum tube adds warmth and detail, and the socket design lets you swap tubes to reshape the sound.
Studio-Grade Connections
Balanced XLR and RCA I/O
Balanced XLR alongside RCA inputs and outputs feed an amplifier or active speakers, plus a 3.5mm output that doubles as a headphone amp for 16-300 ohm headphones.
The Detail
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A HiFi preamp and equalizer with 5-band frequency control, balance adjustment, and a pluggable 6N3 vacuum tube for a warmer signal. Balanced XLR and RCA inputs and outputs connect to an amplifier or active speakers, and a 3.5mm output drives headphones from 16 to 300 ohms.
- 5-band EQ (64Hz-16KHz) with left/right balance control
- Pluggable 6N3 vacuum tube for tube-warmed sound
- Balanced XLR and RCA inputs and outputs
- 3.5mm output drives 16-300 ohm headphones
- Black aluminum alloy chassis with shielded iron plate
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