Burson Soloist 3X GT with ZMF Verite Colsed, ZMF Atrium and HiFiMAN Arya

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The first Burson Audio product was the Soloist GT. I am very happy with the sound of it.

The System

Listening with

ZMF Verite Closed · Headphones: closed-back, dynamic (vapor-deposited beryllium), circumaural
  • Impedance: 300 Ω
  • Sensitivity: ~99 dB/mW (approx., “~” as published)
  • Frequency response: not published
  • Plugs / cables supplied: not published (ZMF lists no connector type)

[1]

ZMF Atrium · Headphones: open-back, dynamic (biocellulose, N52), circumaural
  • Impedance: 300 Ω
  • Sensitivity: ~96 dB/mW (approx., “~” as published)
  • Frequency response: not published
  • Plugs / cables supplied: not published (ZMF lists no connector type)

[2]

HiFiMAN Arya · Headphones: open-back, planar magnetic, circumaural · discontinued
  • Impedance: 35 Ω
  • Sensitivity: 90 dB (reference not stated by HiFiMAN)
  • Frequency response: 8 Hz – 65 kHz
  • Plugs / cables supplied: not published (HiFiMAN spec page lists no connector)
  • Other: weight 404 g

[3]

beyerdynamic T1 (1st Generation) · Headphones: semi-open, dynamic (Tesla), circumaural · discontinued
  • Impedance: 600 Ω
  • Sensitivity: 102 dB (1 mW / 500 Hz) ≈ 104.2 dB/V (calc.)
  • Frequency response: 5 Hz – 50 kHz
  • Plugs / cables supplied: fixed 3 m double-sided balanced (6-core) cable, 6.35 mm plug
  • Other: power handling 300 mW; max SPL 126 dB (300 mW / 500 Hz); headband pressure approx. 2.8 N

Matching notes: At 600 Ω and 102 dB/mW, the T1 (1st Generation) is a high-impedance load that needs voltage more than current: about 1.9 V (6.3 mW, 3.2 mA) for 110 dB SPL (calc.). Burson rates the Soloist 3X GT at 0.64 W (XLR) / 0.32 W (SE) into 600 Ω, which is about 19.6 V / 13.9 V RMS (calc.), roughly 20 dB / 17 dB more than that. The Soloist 3X GT’s 0.5 Ω headphone output impedance is 1/1200 of the load. [4] [5] [6]

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

[5] [6]

Also in the system

Bluesound Node 3
Gustard X26 Pro · DAC: balanced desktop DAC (dual-mono 2x ES9038PRO, MQA, Bluetooth 5.0) · discontinued
  • Frequency response: 20 Hz – 20 kHz (±0.1 dB)
  • Output impedance: 100 Ω (RCA and XLR)
  • Output voltage: RCA 2.5 V (volume 0 dB) · XLR 5 V (volume 0 dB)
  • Inputs: USB (PCM 768 kHz/32-bit, DSD512 native); I2S (HDMI); coax; AES; optical (192/24, DoP64); Bluetooth 5.0 (LDAC); 10 MHz clock in
  • Outputs: XLR; RCA
  • DAC / chipset: 2x ESS ES9038PRO (one per channel)
  • Other: DNR >128 dB; crosstalk -140 dB; THD+N <=0.0001% @ 1 kHz; IMD <0.0006%; <60 W

Matching notes: Burson lists the Soloist 3X GT’s analogue inputs as line level (35 kΩ input impedance). The X26 Pro is rated at 2.5 V (volume 0 dB) (RCA) / 5 V (volume 0 dB) (XLR) output. [7] [5] [6]

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. ZMF Verite Closed: archived page (web.archive.org)
  2. ZMF Atrium: shop.zmfheadphones.com
  3. HiFiMAN Arya: hifiman.com
  4. beyerdynamic T1 (1st Generation): PDF (viva-telecom.org)
  5. Burson Soloist 3X GT product page
  6. Burson Soloist 3XGT User Manual V2.0 (Burson downloads)
  7. Gustard X26 Pro: sartoriacustica.it (review reproducing gustard spec sheet)