Sylph Audio FB360 Mono Amplifier Kit Review

[SylphAudio]

I see no droop. Rather a not too well behaving PFFB - hence the rise and drop at around 20k...

The slight deviation and gentle sloping at +0.2dB before, and -0.5dB drop at 20 kHz are intentional. Instead of aiming for a dead flat frequency response, I opted for lower Q alignment as a system-level tradeoff.

This tuning avoids the high-frequency peaking commonly seen in TPA3255 PFFB/non-PFFB implementations which was totally avoided by this design. Which resulted in nearly identical behavior of 4 ohms and 8 ohms load across the audible band.

 

[Bacchusoo7]

Seems like a cool device. I admire those of you who could actually buy and then implement such a thing. I'm clueless in the DIY realm and would probably have to opt for a Mini 300, or such.

If anyone is willing to humor my ignorance, if two of these were purchased could they be mounted together into a stereo/dual mono set up? Could one get one big power supply or two separate ones?

 

[amirm]

Sure. You could put two in a box and even share the power supply.

 

[Bacchusoo7]

Sure. You could put two in a box and even share the power supply.

Thanks for humoring me. I can't even use a soldering iron very well, but it is a fun thought.

 

[kyuu]

Thanks for humoring me. I can't even use a soldering iron very well, but it is a fun thought.

The innards of the reviewed device posted earlier in the thread:

It's a little hard to see as the uploaded picture is oddly low resolution. However, from what I can tell it should be quite possible to assemble this (or something very like it) without any soldering whatsoever.

 

[Lambda]

I was like yeah this seams to be a well performing module like all the other Hypex... but then i saw its its not Hypex and is about halve the price!
Hard to beat for this price point!

@amirm Thanks for the test! would love to see more from sylph

 

[xanalog]

Thank you for the review, @amirm,
Is it too late to show us a photo of its rear panel?

Most likely that any DIYer would need to build a pair of these or stuff another board inside the case to make it a 2 channel powerAmp.
In that case, wouldn't it be wiser to buy an outboard (GaN) power brick?

So about 500 euro for stereo all included (case, etc) as DIY.
Yes, good value, I agree.

Although it lacks some of the features (L/H gain, auto-sense, Volume-control, volume-bypass, RCA+XLR inputs), it compares well against the 3E (Soyyin) A7, ...but without the possibility of ...

make sure you don't hurt yourself with respect to AC mains wiring,

...twice, because it is a mono design.

 

[Guddu]

Thanks @amirm

@SylphAudio Do you have plans for finished amplifier as well with these modules or just limited to DIY modules?

 

[amirm]

Is it too late to show us a photo of its rear panel?

It is just an XLR socket and AC IES socket. Since the focus of the review as not the finished product, I didn't think to post the rear.

 

[dalbert02]

Would it be blasphemous to put these in an old dead Krell or Levinson amp procured cheap on eBay?

 

[kyuu]

Would it be blasphemous to put these in an old dead Krell or Levinson amp procured cheap on eBay?

Extremely. So definitely do it and make sure to post a thread.

 

[Sokel]

Would it be blasphemous to put these in an old dead Krell or Levinson amp procured cheap on eBay?

Joke aside, couple of those nicely installed on their big heatshinks will greatly improve continuous power vs time and it would potentially add some years of operation because of the cooling real estate.

But yes, a thread would be mandatory!

 

[daniboun]

Seems like a cool device. I admire those of you who could actually buy and then implement such a thing. I'm clueless in the DIY realm and would probably have to opt for a Mini 300, or such.

If anyone is willing to humor my ignorance, if two of these were purchased could they be mounted together into a stereo/dual mono set up? Could one get one big power supply or two separate ones?

You can look here, it's exactly the same principle. I built a Dual Mono amplifier based on a 3E Audio design, but it works in exactly the same way as the Sylph modules :

"Bamboo Project" : Dual Mono 3E Audio 480-1-29A Amplifier

Hi amigos, Following the ASR review of the 3E Audio 480-1-29A Module, I decided to roll up my sleeves and show you that with a little elbow grease, you can create a very beautiful amplifier based on these nice 3E Audio modules. I called this project, "Bamboo"> the pictures will speak for...

www.audiosciencereview.com

 

[DavidEdwinAston]

Would it be blasphemous to put these in an old dead Krell or Levinson amp procured cheap on eBay?

Absolutely, but a real fun idea!

 

[Roland68]

Thanks for humoring me. I can't even use a soldering iron very well, but it is a fun thought.

You don't need to do any soldering to build an amplifier with this board.
You only need wire strippers, crimping pliers, and the appropriate crimp connectors. Then you can make all the necessary connections by crimping.
Whenever possible, a crimped connection is always preferable to a soldered one in terms of quality.

 

[RickS]

Would it be blasphemous to put these in an old dead Krell or Levinson amp procured cheap on eBay?

I have been planning to do this with Hypex/Purifi and is actually cheaper to buy a new case. Most owners want too much for the old Krell and, due to weight, they are not cheap to ship either!

Recently acquired a Hafler Transnova 9505 and may use case from it. Is more utilitarian than a Krell but more than fits the bill for metal mass.

 

[raindance]

Input sensitivity seems a little low - only 15dB gain. What is the input impedance, anyone know?

 

[SylphAudio]

Thanks @amirm

@SylphAudio Do you have plans for finished amplifier as well with these modules or just limited to DIY modules?

Limited only to DIY modules as always

 

[pma]

I like this module and its implementation.