Ying’s Burson Soloist Stellar with Sennheiser HD 6XX and Sennheiser HD 800 S

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Sales Burson
March 27, 2026

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Burson Composer 3X Performance, Burson Soloist Stellar, Drop OAE1, Focal Clear, Fostex TH-X00, HiFiMAN Susvara, Sennheiser HD 6XX, Sennheiser HD 800 S

The Burson Soloist Stellar delivers an exceptional listening experience, with impressively clear, detailed, and dynamic sound. Its performance stands out across a wide range of music genres, offering both precision and musicality that make it a truly enjoyable and engaging amplifier to use.

The System

Listening with

Sennheiser HD 6XX · Headphones: open-back, dynamic, circumaural

Impedance: 300 Ω
Sensitivity: 103 dB SPL @ 1 kHz, 1 V (as published) ≈ 97.8 dB/mW (calc.)
Frequency response: 10 Hz – 41 kHz
Plugs / cables supplied: 3.5 mm stereo jack plug (6.35 mm adapter); 1.8 m cable
Other: THD <0.1% (1 kHz, 1 V)

Matching notes: At 300 Ω and 103 dB/V, the HD 6XX is a high-impedance load that needs voltage more than current: about 2.2 V (17 mW, 7.5 mA) for 110 dB SPL (calc.). Burson rates the Soloist Stellar at 0.5 W (XLR) / 0.26 W (SE) into 300 Ω, which is about 12.2 V / 8.8 V RMS (calc.), roughly 15 dB / 12 dB more than that. The Soloist Stellar’s 0.5 Ω headphone output impedance is 1/600 of the load. ^{[1] [2] [3] [4] [5]}

Sennheiser HD 800 S · Headphones: open-back, dynamic, circumaural

Impedance: 300 Ω
Sensitivity: 102 dB SPL @ 1 V ≈ 96.8 dB/mW (calc.)
Frequency response: 4 Hz – 51 kHz
Plugs / cables supplied: 6.35 mm unbalanced; 4.4 mm balanced

Matching notes: At 300 Ω and 102 dB/V, the HD 800 S is a high-impedance load that needs voltage more than current: about 2.5 V (21 mW, 8.4 mA) for 110 dB SPL (calc.). Burson rates the Soloist Stellar at 0.5 W (XLR) / 0.26 W (SE) into 300 Ω, which is about 12.2 V / 8.8 V RMS (calc.), roughly 14 dB / 11 dB more than that. The Soloist Stellar’s 0.5 Ω headphone output impedance is 1/600 of the load. ^{[6] [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 Stellar. Its 32 Ω and 100 Ω ratings (5 W XLR / 2.5 W SE; 3.5 W XLR / 2 W SE) fall either side of it. The Soloist Stellar’s 0.5 Ω headphone output impedance is 1/110 of the load. ^{[7] [8] [9] [3] [4] [5]}

Fostex TH-X00 · Headphones: closed-back, dynamic (50 mm, >1 T), circumaural (Massdrop collaboration, mahogany cups) · discontinued

Impedance: 25 Ω
Sensitivity: 94 dB/mW ≈ 110.0 dB/V (calc.)
Frequency response: 5 Hz – 45 kHz
Plugs / cables supplied: detachable 3 m braided Y cable, 6.3 mm plug
Other: max input 1,800 mW; 350 g without cable

Matching notes: At 25 Ω and 94 dB/mW, the TH-X00 is a low-impedance load: about 1 V (40 mW, 40 mA) for 110 dB SPL (calc.). Burson does not publish a 25 Ω rating for the Soloist Stellar. Its 16 Ω and 32 Ω ratings (8 W XLR / 4 W SE; 5 W XLR / 2.5 W SE) fall either side of it. The Soloist Stellar’s 0.5 Ω headphone output impedance is 1/50 of the load. ^{[10] [11] [3] [4] [5]}

Drop OAE1

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

^[12]

Burson

Burson Soloist Stellar · Headphone amplifier / preamp

Output power (XLR / SE): 16 Ω 8 W / 4 W · 32 Ω 5 W / 2.5 W · 100 Ω 3.5 W / 2 W · 150 Ω 1.1 W / 0.52 W · 300 Ω 0.5 W / 0.26 W
Output impedance: 0.5 Ω (headphone); pre out 1 / 20 Ω (as published)
Gain: 3 levels (High / Medium / IEM): 16 Ω 8/4 W, 3/1.5 W, 1/0.5 W (XLR/SE); dB not published
Inputs: 1x XLR; 1x RCA; mic bypass
Input impedance: 40 kΩ
Outputs: headphone XLR / 6.35 mm / 3.5 mm; XLR + RCA pre out; RCA mono subwoofer out
Other: THD <0.0015%; FR ±1 dB 0-55 kHz; S/N 105 dB high gain / 120 dB IEM; versions Standard (NE5532, SP01, 24V5A) / Deluxe (V7 Vivid Pro, SP02, Super Charger 5A) / Max (Fusion Core)

^{[3] [4] [5]}

Burson Composer 3X Performance · DAC / preamp · discontinued

Output impedance: 10 Ω (pre out); 25 Ω (DAC out)
Output voltage: RCA 2 V (DAC out) · XLR not published
Gain: High / Low; dB not published
Inputs: USB (XMOS; PCM to 768 kHz/32-bit, native DSD512); Toslink; Bluetooth 5.0 aptX HD; microphone
Input impedance: 38 kΩ (as published; no analogue input listed)
Outputs: XLR + RCA pre / DAC out
DAC / chipset: ESS SABRE32 ES9038Q2M
Other: Model M-80; THD <0.0017%; FR ±1 dB 0-58 kHz

^{[13] [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.