Fosi Audio TB10D Amplifier Review

[juliangst]

It's 100€ here which is the same price as the SMSL DA 6 that measures a lot better, has a screen, EQ settings, a remote and looks better

 

[sarumbear]

Seems the SNR is on track with the manufacturer specs;

TB10D - Fosi Audio

TB10D 2 Channel Class D Power Amplifier Bass you can feel, a mid-range that is crisp and clear, and a high that is sharp and precise. Fosi Audio products deliver exactly what you need to hear without fail. Shop Now The Fosi Audio TB10D is a class D amplifier designed to give you the most

www.fosiaudio.com

However, 300W@4 ohm... not even remotely close.

Shipping a 32V 5A power supply while advertising 2x300W output is what is called ‘caught with pants down your ankles’. In more clear language; a blatant lie.

 

[antcollinet]

Interesting to compare with the Rega IO - better Sinad, more power. About 1/8th the price.

 

[escape2]

It's 100€ here which is the same price as the SMSL DA 6 that measures a lot better, has a screen, EQ settings, a remote and looks better

The Fosi one has more power though, so I guess it depends on what your priorities are. Good to have options, in any case.

 

[amirm]

Shipping a 32V 5A power supply while advertising 2x300W output is what is called ‘caught with pants down your ankles’. In more clear language; a blatant lie.

That has become a norm in this class. If they tell the truth while others don't, it will cost them sales.

 

[HarmonicTHD]

I'm sure quality control can be an issue at this end of the price bracket, and can foresee a situation where a manufacturer sent item is of perfect performance while someone buying from Amazon may have received a dud.

So. I could get over 100 of those for the mentioned so called high amp.

Besides no one has real facts on failure rates so you are just speculating.

 

[Ajax]

For those contemplating a second system where sound quality is important can I suggest the Topping P5A for $349 as an alternative to this amplifier. Even though it costs 5 times more it is still very very inexpensive when compared to "name" amplifiers and it's performance is SOTA. You can add a Topping DAC E30 II for $150 so your front end costs $500, just add speakers such as the excellent ELAC Debut Reference DBR-62 for another $500.

https://www.audiosciencereview.com/forum/index.php?threads/topping-pa5-review-amplifier.28512/

Topping E30 II DAC Review

This is review and detailed measurements of the Topping E30 II DAC. It was sent to me by the company and costs US $149. The single "SEL" button powers on the unit (touch sensitive) and selects input. Some combination of power cycling and that button lets you change menu settings but bets to...

www.audiosciencereview.com

Elac Debut Reference DBR-62 Speaker Review

This is a review and detailed measurements of the Elac Debut Reference DBR-62 bookshelf speaker. It was kindly purchased new and drop shipped to me for testing. The DBR-62 costs US $600 a pair from multiple sources/dealers. The DBR-62 comes in black and walnut finish or the distressed Oak and...

www.audiosciencereview.com

IMO there is a sweet spot for those on a budget wishing for a SOTA system, one that measures extremely well and sounds great, and US$1,000 is it.

 

[Midnight Audiophile]

I tried out the Fosi TB10A and BT30D last year and I believe they both had a pop when when powering down from the power supply and leaving the switch on (the A07 does not pop). I'd be curious to know if this one pops.

 

[pseudoid]

I am going to recommend the Fosi Audio TB10D amplifier.

Thank you for the review, @amirm.
But to what end is your recommendation?
During inflationary (or recessionary) times, it can be "recommended' to go w/cheaper or non name-branded items because food is a necessity.
I find using similar justification for your recommendation, for this otherwise mediocre (yet inexpensive) amp, odd.

 

[Doodski]

This amp is only 5 x 3 x 1 inches. That's astounding for the power output it has and the price.

 

[sarumbear]

This amp is only 5 x 3 x 1 inches. That's astounding for the power output it has and the price.

Add the PSU as that’s normally part of a power amplifier.

 

[amirm]

Thank you for the review, @amirm.
But to what end is your recommendation?
During inflationary (or recessionary) times, it can be "recommended' to go w/cheaper or non name-branded items because food is a necessity.
I find using similar justification for your recommendation, for this otherwise mediocre (yet inexpensive) amp, odd.

I gave context in the review: "If you need an amplifier for secondary use (bedroom, workshop, etc.), the TB10D is a very good candidate for no more money than one or two dinners!"

For primary use, I hope members save up to get much more performant gear that as a minimum is load independent, and has better SNR. Of course if all you can afford is $70, then that is that and this amp and a few others fit the bill.

 

[amirm]

I tried out the Fosi TB10A and BT30D last year and I believe they both had a pop when when powering down from the power supply and leaving the switch on (the A07 does not pop). I'd be curious to know if this one pops.

I will see if I can test and report back. Long time ago I had a pop test for headphone amps. I can resurrect if there is enough interest.

 

[Midnight Audiophile]

I will see if I can test and report back. Long time ago I had a pop test for headphone amps. I can resurrect if there is enough interest.

Great, thanks!

 

[restorer-john]

I will see if I can test and report back. Long time ago I had a pop test for headphone amps. I can resurrect if there is enough interest.

Switch on and switch off transient amplitude into the connected load- worst case volume setting. Just a scope (or AP) shot would be good enough.

Many of these tiny amplifiers do it and it's to be expected at the price. So did plenty of vintage BOTL integrated/receivers in the 1970s so it's nothing new. As you went up the range, you got delayed relay protection, etc. These things don't control their power supply and are virtually a bare bones implementation of the datasheet evaluation circuits.

 

[CedarX]

Shipping a 32V 5A power supply while advertising 2x300W output is what is called ‘caught with pants down your ankles’. In more clear language; a blatant lie.

Even if it is the norm as Amir said, is the PSU the limiting factor for these TPA3255-based amp? Would I get “moar powa” with a 48V (max. indicated on the rear) 350W PSU?

 

[antcollinet]

Even if it is the norm as Amir said, is the PSU the limiting factor for these TPA3255-based amp? Would I get “moar powa” with a 48V (max. indicated on the rear) 350W PSU?

From what I've seen, they generally quote the maximum power the chipamp is capable of on the datasheet.

I have no idea if the rest of the design will cope with the necessary voltage and current needed for the chip to deliver that.

 

[restorer-john]

Device "reviewed" by Cheapaudioman some months ago and he absolutely trashed it.

My goodness, I just looked at his 'review'. Poor guy, he has absolutely no idea.

 

[restorer-john]

Add the PSU as that’s normally part of a power amplifier.

Soon, they'll build the whole amplifier into the SMPS supply and you'll just get a volume control in a matchbox on your desk...

 

[Doodski]

Soon, they'll build the whole amplifier into the SMPS supply and you'll just get a volume control in a matchbox on your desk...

That's actually not a bad idea. I imagine many peeps would love to have that compactness and simplicity on their desktop.