Conrad-Johnson
CONRAD-JOHNSON HVA1 HEADPHONE AMP
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CONRAD-JOHNSON HVA1 HEADPHONE AMP
The HVA1 accommodates two line-level inputs. Power output is 3 Watts into 20 Ohms. The enhanced triode circuit (similar to that introduced in our flagship GAT preamplifier) employs two 6922 vacuum-tubes (one for each channel) for voltage gain coupled to a high-current FET buffer stage (source follower). Each of the two channels is powered by its own independent DC regulator. CJD Teflon capacitors and Vishay resistors are featured in the circuits. The level control is a discrete stepped attenuator constructed entirely with Vishay resistors. The circuitry is housed in a heavy, elegant aluminum chassis dressed with anodized brushed aluminum panels on front, sides, and top.
HVA1 Headphone Amplifier
Specifications
- Power: 3 watts per channel RMS both channels driven into 20 ohms from 30Hz to 15KHz at no more than 2.5% total harmonic distortion or inter-modulation distortion.
- Gain: 14DB
- Sensitivity: 1.4 V rms to rated power
- Frequency Response: 20Hz to 20kHz +0/-.3 dB
- Hum and Noise: <200 UV below 100mw
- Input Impedance: 12k ohms
- Output Impedance: 20-47 ohms
