Dr’s Burson Conductor 3X Reference with Audeze MM-500 and Meze Liric

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Sales Burson
September 8, 2023

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Audeze MM-500, Burson Conductor 3X Reference, Meze Liric

Great packaging and accessories. Just started to listen to music.

The System

Listening with

Audeze MM-500 · Headphones: open-back, planar magnetic, circumaural

Impedance: 18 Ω
Sensitivity: 100 dB/1mW (at Drum Reference Point) ≈ 117.4 dB/V (calc.)
Frequency response: 5 Hz – 50 kHz
Plugs / cables supplied: braided cable; 6.35 to 3.5 mm adapter (terminations not stated)
Other: recommended power >250 mW (min >100 mW; max 5 W RMS);

Matching notes: At 18 Ω and 100 dB/mW, the MM-500 is a low-impedance load, and an efficient one: about 0.42 V (10 mW, 24 mA) for 110 dB SPL (calc.). Burson does not publish a 18 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 1/36 of the load. ^{[1] [2] [3] [4]}

Meze Liric · Headphones: closed-back, planar magnetic (Rinaro Isodynamic Hybrid Array MZ4), circumaural · discontinued

Impedance: 30 Ω
Sensitivity: 100 dB SPL / mW @ 1 kHz ≈ 115.2 dB/V (calc.)
Frequency response: 4 Hz – 92 kHz
Plugs / cables supplied: dual 3.5 mm TS cup sockets (current page)

Matching notes: At 30 Ω and 100 dB/mW, the Meze Liric is a low-impedance load, and an efficient one: about 0.55 V (10 mW, 18 mA) for 110 dB SPL (calc.). Burson does not publish a 30 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 1/60 of the load. ^{[5] [6] [2] [3] [4]}

Burson

Burson Conductor 3X Reference · DAC / headphone amplifier / preamp · discontinued

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.