Gustard H10 headphone amp upgrade with Burson Discrete V4 opamp

Published on

wpadmin
July 21, 2015

Post Info

V4 Opamp
Gustard H10

The GUSTARD H10 headphone amp is very popular among Head-Fiers. At $350 USD it delivers great performance and it is also well loved by DIYers.

Among the many DIY tweaks available for the H10 op-amp upgrade is the easiest and most effective.

Here is one of our customers who upgraded his H10 with one pair of dual and one pair of single SS Opamps:

Here is the active and ongoing discussion about the GUSTARD H10 on Head-Fi: http://www.head-fi.org/t/735828/gustard-h10-high-current-discrete-class-a-output-stage-headphone-amplifier/2775#post_11775092

Happy listening and modding!
Burson Audio

The System

Listening with

Gustard H10 · Headphone amp: Class-A discrete output stage headphone amp / preamp · discontinued

Frequency response: 0 – 55 kHz (-0.5 dB)
Output power (headphone): 16 Ω 1 W · 32 Ω 2 W · 50 Ω 2.7 W · 100 Ω 2.2 W · 600 Ω 0.57 W
Output impedance: not published
Gain: +8 dB nominal; adjustable -4 / +2 / +8 / +14 / +20 dB
Inputs: 2x XLR (balanced); 2x RCA
Input impedance: XLR 10k; RCA 68k
Input sensitivity: +6 dBu
Outputs: 1x 6.35 mm TRS headphone
Other: THD+N <0.00035% (1 kHz, 1 W @ 100 Ω), <0.0007% (0.5 W @ 32 Ω); damping factor >400 @ 50 Ω; dynamic range >128 dB (A); two 25 W toroidal transformers; 3.3 kg

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Burson

Burson V4 Opamp · Discrete opamp (single / dual) · discontinued

Supply voltage: ±5 V to ±20 V (absolute maximum)
Gain-bandwidth product: 50 MHz (at 100 kHz)
Dual or single: dual and single (this post uses the dual and the single)
Package: dual 40 mm × 16 mm × 20 mm; single 40 mm × 16 mm × 14 mm; 8-pin

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Specs from manufacturer data unless a source below says otherwise. “calc.” values are worked out from those figures (V = √(P × R); 110 dB SPL used as a loud reference level). Gear listed without specs is not in our spec library yet.