John’s Burson V5i Opamp with xDuoo XD-05 Plus

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Took a long burn in time, however, the sound separation is fantastic. Works fantastically with my current setup. Just be careful not to drop as you might bend some of the pins on its fall (almost happened to me!). It fits into this just fine with a small clearance on the top which will fit in just fine. My default opamps on the XDuoo XD-05 Plus is the OPA1612 and while great for a default, the vocals and higher treble range were very forward sitting while everything takes a back seat. With the V5i’s, there is amazing sound separation (I can’t believe there’s a huge sound difference even from CD ripped files.), the mid-range and higher have taken a few steps back to blend better with the music and the bass has been improved to sound clear, with oomph with a bit of texture in it. While it’s amazing for what it is, I’m also trying a bunch of other opamps to see what can fit in here. Overall, this is a great all-rounder opamp which will raise the floor of your music and improves a bit on clarity of the music while providing amazing soundstage separation. The only thing I’m missing from this opamp was that ‘tickling’ goosebump feeling that I used to get from the default opamps for vocals and higher ranges.

The System

Listening with

xDuoo XD-05 Plus · DAC / headphone amp: portable DAC / headphone amp (battery) · discontinued
  • Frequency response: amp 10 Hz – 100 kHz (±0.5 dB); USB/SPDIF 20 Hz – 20 kHz (±0.5 dB)
  • Output power (headphone): 32 Ω 1 W
  • Output impedance: not published
  • Gain: not published
  • Inputs: USB (PCM 384 kHz/32-bit, DSD256); optical/coax (192/24); aux in
  • Outputs: headphone (SE)
  • DAC / chipset: AKM AK4493EQ; XMOS XU208 USB
  • Other: S/N 117 dB; THD+N 0.0016% (digital) / 0.0009% (aux); crosstalk >=75 dB; 5000 mAh battery

[1]

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 (this post uses the dual)
  • Package: 11 mm wide × 11 mm deep × 7.3 mm high

[2] [3]

Also in the system

OPA1612 · Dual operational amplifier
  • Supply voltage: ±2.25 V to ±18 V (recommended); 40 V absolute maximum (V+ − V−)
  • Gain-bandwidth product: 40 MHz (G = 1)
  • Dual or single: dual
  • Package: SOIC-8

[4]

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. xDuoo XD-05 Plus: archived page (web.archive.org)
  2. Burson V5i Opamp datasheet V1.0
  3. Burson V5i Opamp product page
  4. OPA1612: PDF (ti.com)