Yutaka’s Burson Conductor 3X Reference with PMC OB1i SE

• Impedance: 25 Ω
• Sensitivity: 110 dB SPL/V ≈ 94.0 dB/mW (calc.)
• Frequency response: 5 Hz – 28 kHz
• Plugs / cables supplied: detachable cable (3 m + 1.2 m), 3.5 mm plug (6.3 mm adapter)
• Other: input power 150 mW; 320 g without cable

Matching notes: At 25 Ω and 110 dB/V, the Hi-X60 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 Conductor 3X Reference. Its 16 Ω and 32 Ω ratings (7.5 W XLR / 3.75 W SE; 5 W XLR / 2.5 W SE) fall either side of it. The Conductor 3X Reference’s 0.5 Ω headphone output impedance is 1/50 of the load. ^{[1] [2] [3] [4]}

• Output power (XLR / SE): 16 Ω 7.5 W / 3.75 W · 32 Ω 5 W / 2.5 W · 100 Ω 1.75 W / 0.88 W · 150 Ω 1.16 W / 0.58 W · 300 Ω 0.58 W / 0.3 W
• Output impedance: 0.5 Ω (headphone); 1 Ω (pre out); 25 Ω (DAC out)
• Output voltage: RCA 2 V (DAC out)
• Gain: High / Low; dB not published
• Inputs: 2x XLR; USB (XMOS; PCM to 768 kHz/32-bit, native DSD512); Toslink; coaxial; Bluetooth 5.0 aptX HD; microphone
• Input impedance: 40 kΩ
• Input sensitivity: line level
• Outputs: XLR pre out; line-level DAC out; 6.35 mm + 4-pin XLR headphone
• DAC / chipset: 2x ESS ES9038Q2M
• Other: Model R180X (3XR); THD <0.0015%; FR ±1 dB 0-58 kHz

^{[2] [3] [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. Austrian Audio Hi-X60: austrian.audio
2. Burson Conductor 3X Reference product page (conductor-3x page, archived 2019)
3. Burson Conductor 3X Reference product page (conductor-3-performance page, archived 2020)
4. Burson Conductor 3X References User Manual V1.6 (Burson downloads)