channel system and was pleasantly surprised by its wonderful soundstaging, openness, transparency, natural timbre, and fine detail retrieval. I can imagine several audiophiles using the WA33 as a balanced linestage in their reference systems. It’s that good!
The Woo Audio WA33 is a terrific headphone amplifier, as well as a balanced linestage preamplifier suitable for use in the finest audio systems. It should drive any dynamic or planar magnetic headphone without a problem and the overall sound is glorious with a rich, but naturally detailed, tonal balance, explosive dynamics, and powerful and extended bass. Better still, its superb performance will keep you listening late into the night.
Woo Audio WA33 headphone amplifier
Type: Fully-balanced, push-pull, Class-A tube-driven headphone amplifier
Tube Complement: 4 × 6C45 driver, 4 × 2A3 power, and 1 × 5U4G rectifier
Inputs: XLR × 2, RCA × 1
Outputs: Dual 3-pin XLR (left and right channel), 4-pin XLR × 1 and ¼” (6.3mm), XLR x 1 preamp
Headphones impedance: 8 to 600 Ohms
Tube Complement: 6C45 driver × 4, 2A3 power × 4, 5U4G rectifier
Colors: Black or Silver
Frequency Response: 10Hz–60kHz, -2dB
Weight: 53 lbs. (standard version); 56 lbs. for Elite Edition
Price: $7999 (standard build, as reviewed; optional Elite version is $14,999)
Long Island City, NY 11101
+1 (917) 773-8645