Wayne’s Burson Soloist 3X GT with Audeze LCD-X (2021)

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Tried the Soloist 3XP and moved up to the Soloist 3X GT … terrific headphone amp and system preamp!

The System

Listening with

Audeze LCD-X · Headphones: open-back, planar magnetic, circumaural
  • Impedance: 20 Ω
  • Sensitivity: 103 dB/1mW (at Drum Reference Point) ≈ 120.0 dB/V (calc.)
  • Frequency response: 10 Hz – 50 kHz
  • Plugs / cables supplied: braided 4-pin XLR combo cable with 6.35 mm single-ended adapter
  • Other: recommended power >250 mW (min >100 mW; max 5 W RMS); 106 mm driver; max SPL >130 dB

Matching notes: At 20 Ω and 103 dB/mW, the Audeze LCD-X is a low-impedance load, and an efficient one: about 0.32 V (5 mW, 16 mA) for 110 dB SPL (calc.). Burson does not publish a 20 Ω rating for the Soloist 3X GT. Its 16 Ω and 32 Ω ratings (10 W XLR / 5 W SE; 8 W XLR / 4 W SE) fall either side of it. The Soloist 3X GT’s 0.5 Ω headphone output impedance is 1/40 of the load. [1] [2] [3]

Burson

Burson Soloist 3X GT · Headphone amplifier / preamp (Class-A) · discontinued
  • Output power (XLR / SE): 16 Ω 10 W / 5 W · 32 Ω 8 W / 4 W · 100 Ω 3.8 W / 1.9 W · 300 Ω 1.3 W / 0.65 W · 600 Ω 0.64 W / 0.32 W
  • Output impedance: 0.5 Ω (headphone); 25 Ω (pre out)
  • Gain: High / Medium / Low; dB not published
  • Inputs: 2x XLR; 2x RCA; mic bypass
  • Input impedance: 35 kΩ
  • Input sensitivity: line level
  • Outputs: XLR + RCA pre out; RCA subwoofer out; 4-pin XLR + SE headphone
  • Other: Model R-120X (“GT3”); THD <0.0015%; FR ±1 dB 0-48 kHz

[2] [3]

Also in the system

Sony SCD XA5400ES

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. Audeze LCD-X: audeze.com
  2. Burson Soloist 3X GT product page
  3. Burson Soloist 3XGT User Manual V2.0 (Burson downloads)