Gustard H10 Class A Stereo Headphone Amp,Adjustable Gain,Balanced/Unbalanced,Musical

Top of the line Gustard Model H10 Stereo Headphone amp, Class A
operation, Dual Power transformers, balanced and unbalanced outputs,
adjustable gain controls on the back. These are very hard to find. Read
the rave reviews and comparisons to the very similar Violectric
headphone amp. It is Class A, very powerful and dead quiet. It sounds
superb, open, detailed, dynamic, extended, spacious, involving, smooth,
natural and very musical. It is in very nice well cared for condition,
non smoking climate controlled environment. The shipping cost includes
safe packing, insurance, prompt shipping and tracking number. It comes
with the original box and packing. I have a 1000+++ perfect feedback on
Audiogon and elsewhere, long time audiophile. Buy with confidence, Good
listening, SonnY :) See Specs Below:

Well-designed and solidly
built, the Gustard H10 is a powerful, Class A, output stage headphone
amplifier designed for home listening. Measuring 10” x 7” and weighing 7
lbs., the 110V H10 features two independent amplification circuits for
the left and right channels, four gain switches, two RCA inputs, and two
balanced XLR inputs.
The unit uses two 25W sealed transformers so
that the left and right channels each receive independent power in order
to reduce the amount of channel crosstalk. On the back of the H10, the
four gain switches (-12, -6, +6, +12) allow the unit to drive a variety
of different impedance headphones. The H10 includes start-up delay, DC
offset, overload, and protection circuitry to ensure safe use.
Input impedance: XLR: 10kΩ, RCA: 68kΩ
Input Sensitivity: +6 dBu
Main amplifier gain: +8 dB
Main amplifier gain adjustment range: -4 / +2 / +8 / +14 / +20 dB
Frequency response: 0-55kHz (-0.5dB)
Damping Factor:> 400 @ 50Ω
Dynamic range:> 128dB (A-weighted)
Background noise: <-100dBu (A-weighted)
THD + N (1kHz 1W @ 100Ω): <0.00035%
THD + N (1kHz 0.5W @ 32Ω): <0.0007%
Crosstalk:-110db (1kHz)
Headphone Output: 1x 6.35mm TRS Jack
Power supply voltage: 230V AC/115 AC; 50/60Hz
Power consumption: ≤ 20VA
Machine Standard: GB a three-prong power cord
Machine size (not included prominent part): length × width × height = 273mm × 190mm × 70mm
Package dimensions: 15.15 x 11.02 x 5.9 in (385 × 280 × 150 mm)