Sergey’s Burson Funk with KEF Q150

Published on

Sales Burson
July 1, 2023

Post Info

Feedbacks - Funk, Feedbacks - Super Charger 3A | 5A
Burson Funk, Burson Super Charger 5A, FiiO BTA-30, KEF Q150

An awesome small amp that is great for headphones and sufficient for a desktop setup.
I love the way that opamps are swappable as this gives options.
I have also bought the 5A POWER supply upgrade.
Only one issue – when turning OFF the speakers POP, there should be a dampener built in.

The System

Listening with

KEF Q150 · Speakers: bookshelf, two-way bass reflex (Uni-Q) · discontinued

Impedance: 8 Ω (minimum 3.7 Ω)
Sensitivity: 86 dB (2.83 V / 1 m)
Frequency response: 51 Hz – 28 kHz (±3 dB); 47 Hz (-6 dB)
Recommended amplifier power: 10 – 100 W
Other: max output 108 dB; 5.6 kg; crossover 2.5 kHz

Matching notes: The KEF Q150 is rated at 86 dB (2.83 V / 1 m) into 8 Ω nominal (3.7 Ω minimum). Burson rates the Funk at 35 W into 8 Ω and 45 W into 4 Ω. At that rating the speaker would reach about 101 dB SPL at 1 m (calc., one speaker, before room gain). KEF recommends 10 – 100 W amplifiers. ^{[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]}

Burson Super Charger 5A · Power supply (24 V DC)

Other: 24 V / 5 A; noise floor <1 µV; 2.5 mm barrel plug, centre positive

^[5]

Also in the system

FiiO BTA-30

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.