Hong Kong made Grant Fidelity Tube DAC-09 is a tube-output stage USB DAC with headphone amp. Seems like a lot to offer for merely US$215. Tweakers can tube roll the unit, several discussions on DAC-09 tube rolling here:
Features:
- 2 x analog RCA input
- 1 x coaxial, 1 x Toslink and 1 x USB 2.0.
- 2 x RCA Outputs tailored to your taste - one with transistor and one with single 6N3 (5670) vacuum tube.
- Built-in headphone amp to allow you enjoy music in privacy (standard 6.5mm jack). Transistor output.
- Separate power supply rectification to analog and digital circuits
- Gold coated signal connectors throughout
- Supports up to 24 bit and 96kHz
- High quality processing chips used throughout - Cirrus Logic for main D/A converter and National Semiconductor LF353N for op-amp
Specifications:
- Input impedance: Analog - 100kohm; Digital - 75 kohm
- THD: Transistor output <= 0.001%; Tube output <= 0.1%
- Frequency Response: 20Hz to 30kHz +/-1 dB
- Max Output: 1000mWx 2 (32 ohm); 500mWx2 (300 ohm); 300mWx2 (600 ohm)
- S/N ratio: Transistor - 96dB; Tube - 90dB
- Output Voltage: 2000mV
- Dynamic Range: 117 dB
- Power supply: 115/230V, 60/50Hz selectable
- Size: 26cm Width x 17cm Depth x 5.5cm Height
- Net weight: 2kg (detachable standard IEC power cord included)
- Color: silver or black face plate
- $215 direct fro Hong Kong