Products - Cary Classic

Headphone Amplifier

Cary Audio’s all-new HH-1 headphone amplifier is a stunning achievement in sound quality. Its hybrid design features a tube preamplifier stage followed by a single-ended FET solid-state amplifier, using the best performance features of both technologies combined to give you the most enjoyable listening experience possible.

Top quality parts, excellent engineering, beautiful fit and finish, simple to hook up and use in any system configuration, designed and built in the USA, the HH-1 headphone amplifier will give you years of detailed and accurate musical reproduction with virtually any high-quality headphones.


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Input Impedance 50K ohms
Gain 20dB
Frequency Response 5Hz to 35 kHz (-1dB)
Signal to Noise Ratio >90dB at 0dB gain
THD <0.05%
Channel Separation >70dB/10kHz
Output Power

200mW/300 ohms
300mW/30 ohms

Output Impedance 5 ohms
Tube Complement 2 x 6922 (6DJ8 Tubes)
Full Regulated Power Supply Discrete regulators for audio circuits
Headphone Connector 1 x phone jack
Recommended Headphone Impedance Range 30-600 ohms
RCA Connectors 4 x gold plated
1 set for input and other used as pass through
Dimensions 14.5" L x 8.5" W x 4" H
Weight 10 lbs.

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The new HH-1 headphone amplifier from Cary Audio is an all-new hybrid design, featuring a tube input stage feeding a single-ended MOSFET output stage.  These MOSFETs were chosen as they have sonic characteristics very similar to tubes, and the entire amplifier operates fully in class-A at all output levels. It is extremely simple to connect and operate, featuring a pair of RCA input jacks and a loop-through output pair, a power switch and a volume control.

Top quality parts are mounted on a heavy gauge fiberglass circuit board, and only two stages of amplification are used for the shortest possible signal path. A power transformer, rated at three times what is required for the amplifier’s design, feeds a fully regulated discrete power supply for the best sound quality. It is designed to drive headphones with an impedance between 30 and 600 ohms. A 30-second muting circuit prevents any annoying pops and clicks when turning on the HH-1 headphone amplifier, and ensures that all circuits are fully stabilized before each listening session.