James’s Burson Funk with Focal Elegia, Gold Planar GL2000 and Koss KPH30i

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Sales Burson
May 20, 2021

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Burson Funk, Chord Mojo, Focal Elegia, Gold Planar GL2000, Koss KPH30i, Meze 99 Noir

This is my first Burson product. I’ve only just opened the box but it looks sensational and I can’t wait to start listening to it.

The System

Listening with

Focal Elegia · Headphones: closed-back, dynamic (40 mm Al/Mg M-dome), circumaural · discontinued

Impedance: 35 Ω
Sensitivity: 105 dB SPL / 1 mW @ 1 kHz ≈ 119.6 dB/V (calc.)
Frequency response: 5 Hz – 23 kHz
Plugs / cables supplied: 3.5 mm cable (1.2 m) (per datasheet)

Matching notes: At 35 Ω and 105 dB/mW, the Focal Elegia is a low-impedance load, and an efficient one: about 0.33 V (3.2 mW, 9.5 mA) for 110 dB SPL (calc.). Burson does not publish a 35 Ω rating for the Funk. Its 32 Ω and 100 Ω ratings (2.5 W SE; 0.6 W SE) fall either side of it. The Funk’s under 2 Ω headphone output impedance is less than 1/18 of the load. ^{[1] [2] [3] [4] [5]}

Gold Planar GL2000

Koss KPH30i

Meze 99 Noir · Headphones: closed-back, dynamic (40 mm), circumaural · discontinued

Impedance: 32 Ω
Sensitivity: 103 dB SPL / mW @ 1 kHz ≈ 117.9 dB/V (calc.)
Frequency response: 15 Hz – 25 kHz
Plugs / cables supplied: dual 3.5 mm TS cup sockets; 6.3 mm and airplane adapters
Other: max input 50 mW

Matching notes: At 32 Ω and 103 dB/mW, the 99 Noir is a low-impedance load, and an efficient one: about 0.4 V (5 mW, 13 mA) for 110 dB SPL (calc.). Burson rates the Funk at 2.5 W (SE) into 32 Ω, which is about 8.9 V RMS (calc.), roughly 27 dB more than that. The Funk’s under 2 Ω headphone output impedance is less than 1/16 of the load. ^{[6] [3] [4] [5]}

Burson

Burson Funk · Headphone amplifier / integrated amplifier

Output power (headphone): 16 Ω 3.5 W · 32 Ω 2.5 W · 100 Ω 0.6 W · 150 Ω 0.4 W · 300 Ω 0.15 W
Power: 8 Ω: 35 W · 4 Ω: 45 W
Output impedance: <2 Ω (headphone)
Gain: not published
Inputs: RCA L/R
Input impedance: 38 kΩ
Outputs: headphone (SE); speaker terminals
Other: Model P-300; THD <0.03%; FR ±1 dB 0-35 kHz; speaker S/N 92.5 dB

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

Also in the system

Chord Mojo · DAC / headphone amp: portable DAC / headphone amp (FPGA, battery) · discontinued

Output power (headphone): 8 Ω 0.72 W · 600 Ω 0.035 W
Output impedance: 0.075 Ω
Output voltage: RCA 3 Vrms (line level mode, 3.5 mm)
Inputs: Micro USB (768 kHz/32-bit, DSD256); 3.5 mm coax (768 kHz); Toslink (96 kHz)
Outputs: 2x 3.5 mm headphone
DAC / chipset: Chord custom FPGA
Other: dynamic range 125 dB; THD @ 3 V 0.00017%; supports 800 Ω headphones; 8 h battery

^[7]

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.