WooAudio 3+

WooAudio 3 Plus - Single-Ended OTL, Class A Vacuum Tube Headphone Amplifier

WooAudio 3+ is an enhanced model of the WooAudio 3, featuring a filter choke in the power supply while removing the pre-amplifier output scheme. The WA3+ increases output power and thus better synergy with low impedance headphones such as Grado GS-1000 and AKG-701. This model retains sound signature of the WooAudio3 as it pushes to a higher performance horizon.

* Technical Specifications: Headphones impedance : 30-600 Ohms
* Input impedance: 100 Kilo-Ohms
* Frequency response: 8 Hz - 100 KHz -3dB
* Signal/Noise: 95 dB
* THD: <= 0.08%
* Voltage: AC 110/220V, 50/60 Hz
* External dimension: 6"(H), 5½"(W), 13"(D)
* Weight: 11.5 lbs

* Standard Features: Point-to-Point wiring
* One 6AS7 / 6080 [PDF] power tube
* Two 6922 / 6DJ8 [PDF] drive tubes
* One RCA input
* ¼" stereo headphone jack
* Full aluminum die-cast chassis, anodized finished
* Whole aluminum volume knob and power switch button
* 80 watts specially made toroidal transformer
* Specially made filter choke
* Gold-pin tube sockets
* Gold-plate RCA
* Alps potentiometer and power switch
* Rubycon and WIMA capacitors
* Dale and Vishay high precision resistors
* Teflon wires

* Power cord and interconnection cables are not included.