Sennheiser HD 558 headphone upgrade with Burson Discrete V5i opamp

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Post Info

Not audiophile type, just normal computer audio. I had the ZxR, headphone and speaker sets for years. I can definitely hear the improvement from changing the OpAamp, that’s probably as much I can describe. I like Burson has an upgrade pack for the card, and I can put the shroud back on with the v5i. Really extends the cards life even longer. Removing the old one was a bit of pain trying not to break the pins without the proper puller.

The System

Listening with

Sennheiser HD 558 · Headphones: open-back, dynamic (E.A.R. angled transducers), circumaural · discontinued
  • Impedance: 50 Ω
  • Sensitivity: 112 dB SPL (1 kHz / 1 Vrms) ≈ 99.0 dB/mW (calc.)
  • Frequency response: 15 Hz – 28 kHz
  • Plugs / cables supplied: detachable 3 m cable, 6.3 mm plug + 3.5 mm adapter

[1] [2]

Logitech Z2300 · Speakers: active 2.1 PC speaker system (THX certified, 2 satellites + subwoofer) · discontinued
  • Frequency response: 35 Hz – 20 kHz
  • Other: satellites 2x 40 W RMS (8 Ω, 1 kHz, 10% THD); subwoofer 120 W RMS (8 Ω, 100 Hz, 10% THD); peak 400 W; SNR >100 dB; THD <0.05% before clipping

[3]

Burson

Burson V5i Opamp · Discrete opamp (single / dual) · current
  • Supply voltage: ±5 V / 10 VDC to ±16 V / 32 VDC (absolute maximum)
  • Gain-bandwidth product: 50 MHz (at 100 kHz)
  • Dual or single: dual and single
  • Package: 11 mm wide × 11 mm deep × 7.3 mm high

[4] [5]

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. Sennheiser HD 558: manual.nz
  2. Sennheiser HD 558: audio-digital.net
  3. Logitech Z2300: PDF (logitech.com)
  4. Burson V5i Opamp datasheet V1.0
  5. Burson V5i Opamp product page