Woo Audio WA7 + WA7p

Specifications:

• All-tube design (not hybrid)
• Class-A, Single-ended Triode transformer-coupled
• Improved analog circuit
• 6C45 x2 driver/power tubes, 12AU7 x2 rectifier tubes for WA7tp tube power supply upgrade
• Teflon tube sockets
• ESS SABRE Reference DAC (ES9018K2M)
• XMOS xCORE-AUDIO asynchronous USB compatible with Mac, PC, Android and iOS devices*
• Headphones impedance : 8-600 Ohms
• Input impedance: 100 Kilo-Ohms
• Hi-res audio playback up to 24-bit/384kHz
• Inputs: 1 high-retention USB (Type-B) input, 1 RCA
• Outputs: 1 1/4" and 1 1/8" headphone outputs, 1 RCA (same connector as the input)
• Max output: approx 1 watt @ 32 ohms
• Frequency response: 11Hz to 27kHz, +/-0.5dB
• Distortion: <0.03%
• S/N: 95dB
• Power consumption: 25W max
• Mains supply: 100-120V, 220-240V, 50/60Hz, user selectable
• Finish: Anodized aluminum
• DC cord length: 4.25 ft or 1.3 m
• Dimension: AMP: 4.8" L x 4.8" W x 5.1" H with glass
  PSU: 7" L x 3.5" W x 2.2" H
• Weight: AMP - 5.3 lbs / 2.4kg, Glass - 3.3 lbs / 1.5kg
  PSU - 2.8 lbs / 1.4kg
  WA7tp vacuum tube PS - 9.4 lbs / 4.3kg

• Features:

  • Handmade output transformer with Nickel Alloy core
  • 24-Bit, 384kHz high resolution playback
  • Ultra-low jitter USB 2.0 runs on Asynchronous mode
  • High and low impedance output facilitated via toggle switch on back panel
  • Open load protection will automatically engage to prevent the amp from damaging when no headphones are plugged in
  • Multi-functional switch for USB input, RCA input, and RCA output via D/A.
  • The RCA connectors can be used either as RCA analog inputs or USB DAC preamp outputs
  • All-aluminum chassis with no screws visible from any viewing angles
  • High clarity tube protection glass
  • Multi-layer military grade PCBs
  • Driver for Windows Vista/XP/7/8/10
  • USB Audio Class 2.0 is natively supported by Apple OS X version 10.6.4 and above without installing driver