Joseph’s Burson Soloist 3X GT with HiFiMAN Susvara and HiFiMAN Arya

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Working perfectly

The System

Listening with

HiFiMAN Susvara · Headphones: open-back, planar magnetic, circumaural
  • Impedance: 60 Ω
  • Sensitivity: 83 dB (reference not stated by HiFiMAN)
  • Frequency response: 6 Hz – 75 kHz
  • Plugs / cables supplied: not published (HiFiMAN spec page lists no connector)
  • Other: weight 450 g

[1]

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

[2]

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. [3] [4] [5]

Focal Clear · Headphones: open-back, dynamic (40 mm Al/Mg M-dome), circumaural · discontinued
  • Impedance: 55 Ω
  • Sensitivity: 104 dB SPL / 1 mW @ 1 kHz ≈ 116.6 dB/V (calc.)
  • Frequency response: 5 Hz – 28 kHz
  • Plugs / cables supplied: 4-pin XLR; 6.35 mm; 3.5 mm cables supplied

Matching notes: At 55 Ω and 104 dB/mW, the Focal Clear is a low-impedance load, and an efficient one: about 0.47 V (4 mW, 8.5 mA) for 110 dB SPL (calc.). Burson does not publish a 55 Ω rating for the Soloist 3X GT. Its 32 Ω and 100 Ω ratings (8 W XLR / 4 W SE; 3.8 W XLR / 1.9 W SE) fall either side of it. The Soloist 3X GT’s 0.5 Ω headphone output impedance is 1/110 of the load. [6] [7] [8] [4] [5]

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

[4] [5]

Also in the system

Topping D90SE · DAC: balanced desktop DAC (ES9038PRO, MQA, Bluetooth 5.0) · discontinued
  • Frequency response: 20 Hz – 40 kHz (±0.3 dB)
  • Output impedance: 100 Ω (RCA and XLR)
  • Output voltage: RCA 2.1 V (4 V mode) / 2.6 V (5 V mode) · XLR 4.2 V (4 V mode) / 5.2 V (5 V mode)
  • Inputs: USB (PCM 768 kHz/32-bit, DSD512); AES; optical; coaxial; Bluetooth (LDAC, aptX HD)
  • Outputs: XLR; RCA
  • DAC / chipset: ESS ES9038PRO; XMOS XU216; Qualcomm CSR8675
  • Other: XLR: THD+N <0.00005% @ 1 kHz, SNR / DR 134 dB; RCA: THD+N <0.00007%, SNR / DR 127 dB

Matching notes: Burson lists the Soloist 3X GT’s analogue inputs as line level (35 kΩ input impedance). The D90SE is rated at 2.1 V (4 V mode) / 2.6 V (5 V mode) (RCA) / 4.2 V (4 V mode) / 5.2 V (5 V mode) (XLR) output. [9] [10] [4] [5]

Schiit Yggdrasil · DAC: multibit DAC (original 2015 version, AD5791 x4, SHARC DSP closed-form filter) · discontinued
  • Frequency response: 20 Hz – 20 kHz (±0.1 dB); 0.5 Hz – 200 kHz (-1 dB)
  • Output impedance: 75 Ω
  • Output voltage: RCA 2.0 V · XLR 4.0 V
  • Inputs: AES/EBU; coaxial; optical; BNC; USB (all up to 24/192)
  • Outputs: 1x XLR pair; 2x RCA pairs
  • DAC / chipset: 4x Analog Devices AD5791BRUZ (balanced); ADI SHARC DSP; AKM AK4113 S/PDIF; C-Media CM6632 USB
  • Other: THD 0.006%; IMD 0.007% CCIF; S/N >117 dB ref 2 V; 35 W; 11.4 kg

Matching notes: Burson lists the Soloist 3X GT’s analogue inputs as line level (35 kΩ input impedance). The Schiit Yggdrasil is rated at 2.0 V (RCA) / 4.0 V (XLR) output. [11] [12] [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. HiFiMAN Susvara: hifiman.com
  2. HiFiMAN Arya: hifiman.com
  3. Audeze LCD-X: audeze.com
  4. Burson Soloist 3X GT product page
  5. Burson Soloist 3XGT User Manual V2.0 (Burson downloads)
  6. Focal Clear: PDF (dam.focal-naim.com) (FP_Clear_GB-pdf page)
  7. Focal Clear: PDF (dam.focal-naim.com) (UserManual_Clear_85x220_Web-pdf page)
  8. Focal Clear: focal.com
  9. Topping D90SE: hifigo.com (retailer)
  10. Topping D90SE: apos.audio (retailer)
  11. Schiit Yggdrasil: stereophile.com (magazine reproduction of manufacturer specs)
  12. Schiit Yggdrasil: PDF (schiit.com) (magazine reproduction of manufacturer specs)