Burson Funk with Logitech X-530 and Wilkins P9

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Sales Burson
November 14, 2021

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Feedbacks - Funk
Burson Funk, Cambridge Audi DacMagic Plus, Cambridge Audio DacMagic Plus, Logitech X-530

Fantastic

The System

Listening with

Logitech X-530

Bowers & Wilkins P9 · Headphones: closed (circum-aural), dynamic (2 x 40 mm full range) · discontinued

Impedance: 22 Ω
Sensitivity: 111 dB/V @ 1 kHz ≈ 94.4 dB/mW (calc.)
Frequency response: 2 Hz – 30 kHz
Plugs / cables supplied: detachable 1.2 m (TRRS, remote/mic) and 5 m cables; 3.5 mm; 2.5 mm plug at left cup
Other: product name P9 Signature; THD <0.2% (1 kHz/10 mW); max input 50 mW; 415 g

Matching notes: At 22 Ω and 111 dB/V, the Bowers & Wilkins P9 is a low-impedance load: about 0.89 V (36 mW, 41 mA) for 110 dB SPL (calc.). Burson does not publish a 22 Ω rating for the Funk. Its 16 Ω and 32 Ω ratings (3.5 W SE; 2.5 W SE) fall either side of it. The Funk’s under 2 Ω headphone output impedance is less than 1/11 of the load. ^{[1] [2] [3] [4]}

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

^{[2] [3] [4]}

Also in the system

Cambridge Audio DacMagic Plus · DAC / digital preamp with headphone amp (dual WM8740, 384 kHz upsampling) · discontinued

Frequency response: 20 Hz – 20 kHz (±0.1 dB, steep filter off)
Output voltage: RCA 2.1 V · XLR 4.2 V
Inputs: 2x digital (coaxial or optical each, to 24/192); USB (24/96, UAC1); BT100 Bluetooth input
Outputs: RCA; XLR; coaxial + optical pass-through; 6.35 mm headphone
DAC / chipset: 2x Wolfson WM8740 (dual differential); ADI ADSP21261 DSP (ATF2 upsampling to 24/384)
Other: 52 x 215 x 191 mm; 1.2 kg

^[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.