Gustard H10 headphone amp upgrade with Burson Discrete V5 opamp

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So far, im realy be impresed by the performance of my V5 D and V5 S, really impressive !!!

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

[1] [2]

Burson

Burson V5 Opamp · Discrete opamp (single / dual) · discontinued
  • Supply voltage: ±3.5 V to ±15 V (absolute maximum)
  • Gain-bandwidth product: 50 MHz (at 100 kHz)
  • Dual or single: dual and single
  • Package: 14.5 mm wide × 12.4 mm deep × 29 mm high (V5-OPA-D)

[3]

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.

  1. Gustard H10: littlemart.wordpress.com (retailer + forum copy of gustard spec sheet)
  2. Gustard H10: auriculares-hifi.com (retailer + forum copy of gustard spec sheet)
  3. Burson V5 Opamp datasheet V1.1