Something between Burson Audio Funk and Audioengine N22

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enb141

Member
Joined 2021
#1
Hi, I'm new here, and noob 🙂() but I would like to know a little bit about amps, so I'm looking for something between the Burson Audio Funk and the Audioengine N22.

So that do I'm looking for exactly:

- Power Class A/B between 22 - 45 watts
- Potentiometer Alps or better (as in Burson Funk): I need a well "synchronized/matching" volume as in Funk, the one that N22 has is pretty crappy specially at low volumes.
- low noise (close to 0 distortion at 100% volume): Funk has pretty good low noise at 100% volume in either headphones/amp.
- metal enclosure for better head dissipation
- Small form factor: both n22 and funk are very small and have the power supply separated from the amp.
- No pops, Funk has pops when turning off the amp.
- 2 RCA inputs (Funk has 1 rca / n22 has 1 rca, 1 3.5 trs)
- headphone amp (optional but very welcome) balanced if possible with at least 5volts for planars/dynamics
- high gain / low gain headphone selector (optional)

I think that's all, I'm not looking for anything fancy like remote control or LCD displays or digital switches, just the basic but well built.
 
#2
...It's 2 x 29W/8Ohms or 2x40W/4Ohms speakers amplifier based on LM3886TF
The main SMPS (power brick) has an output of 12V/10A and is indeed low-noise. When overcharging it, the internal chopper becomes a bit noisy, but under normal conditions you can't really overcharge it (I was able to make both LM3886TF to oscillate to overcharge the PSU and actually hear chopper's noise).

The 2 output chips are powered through 4 x SMPS power regulators, 2 x XLSEMI 6019E1 and 2 xXLSEMI 4015E1, each regulator being able to sustain a load of 5 Amps, so quite beefy. I was able to measure +/-24.5V on each dual PSU without any visible spikes or high frequency artefacts on my scope, so pretty clean rails for a switching power supply.
Burson BANG (inside pics, technical stuff etc.)
Power tests I did with a dummy resistor of 4.9 Ohms show quite a decent powerful amplifier here of 2 x 40W. However, for 4 Ohms speakers BANG's external power adapter of only 120W may not fit TI's output power requirements of almost 55W/channel. Instead, for 8 Ohms BANG is within TI's power specs of 29W/channel:
Who wants more power out of BANG may get a more beefy external power adapter (perhaps a linear one) or use a computer PSU of at least 180W. Although, I'm not sure BANG's case, that acts as a heatsink, will be able to dissipate quickly the heat generated by 2 x 55W.
| Audio Science Review (ASR) Forum
 
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#3
"Promises of delivery dates blown time and time again. Someone at Burson better get control of production and shipping. They also should get someone who can write copy. Spelling and grammatical mistakes on some pages are embarrassing. I know they are mostly an engineering company but it's not hard to hire an English major who can also tone down the hyperbole and the unnecessary shots taken, not so subtly, at the engineering done by other manufacturers."
Burson Funk. Thoughts? | Audio Science Review (ASR) Forum

"What a disappointment, I just got my Burson Funk and came broken, the left channel doesn't works at all, neither headphones or speakers, so is probably the RCA section that is broken.

Another thing that I didn't like is that is not Australian, is Chinese made, hence the bad quality."
Burson Audio FUNK, 3Wpc Headphone Amp and 45Wpc Class-AB Speaker Amp | Page 3 | Headphone Reviews and Discussion - Head-Fi.org
 
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#5
Spelling and grammatical mistakes on some pages are embarrassing.
Click to expand...
The ones that amused me most was the "silicone dice" and "NE5543 opamp schematic" on their discrete opamp page!

Alas the audiophoolery and semiconductor woo in their marketing make for a distinctly nasty taste in the mouth. They claim discrete is the only way to make superior opamps, then produce ones that are worse than most integrated audio opamps (including many of the ones they claim they can replace). 70dB open loop gain? 170µA bias current? 0.02% THD? Really? Is that the best discrete can do? - Well no, look at the SparkOS SS3601 for instance, seems like a decent effort 🙂

I do wonder if the V5/V6 humongous bias and offset currents are more misprints, but hey publishing a datasheet that's grossly in error isn't a great thing either is it?


BTW just looked at their publicity photos of the Funk, which has all the appearance of class D, not A or AB, you can clearly see 4 inductors in a row, and large SMT chips surrounded by banks of electrolytics and no heat sinks...
 
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#6
SMPS 12v\10a, 2xSMPS +-24,5v, 2xLM3886T.
With a voltage boost converter like in car amplifiers.
In a small case 2x40 W class AB. Will overheat. It was better to immediately make class D 🙁
 
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#8
OPamp 3886T is available in services. The voltage converter IC may be less readily available.
In addition, the services of a qualified repairman will be required. He must have the skills to repair SMPS or automotive amplifiers with voltage converters.
Try to contact the Burson service for advice.
Heating problems at maximum power in summer are guaranteed. You can add a fan.
 
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#9
OldDIY said:
OPamp 3886T is available in services. The voltage converter IC may be less readily available.
In addition, the services of a qualified repairman will be required. He must have the skills to repair SMPS or automotive amplifiers with voltage converters.
Try to contact the Burson service for advice.
Heating problems at maximum power in summer are guaranteed. You can add a fan.
Click to expand...

Well after using N22 for many years, I don't need full power of 45Watts, maybe I only use 30 watts.

For summer issues, I have AC that keeps the room temperature at below 23C.

Is weekend, I'll try to talk to burson on monday to see what they say.
 
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