SCIBER AMPLOI Amplifier Review

[Joachim Herbert]

Stupid me. Must have been blind not to see the charts clearly show 5W output. Mea culpa.

 

[GydruS]

So what was your objective with this device and what 'essential' points required so much 'research' when all the components are known: it is nothing more and nothing less than a PCB assembly that could very easily be found on a known resale site in the East and at prices that are much more than affordable...

Yes, components are known, but recipe - no ). We have dived into scheme of ICs and develpoed our custom PCB with another, not datasheet-recommended design. We used solutions, that we have not seen anywhere. Just look to Amir's posts here, please.

who have a sort of 'madness of grandeur'

Thanks for honesty, but no ) We are driven by curiosity and perfectionality, not 'madness of grandeur'.

So, do you think Amir's measurements are correct?

Of course! Amir's measurements are perfect! )

Maybe, we like SINAD rating at 50 watts more, than at 5W, because there are not many listen at 5W, but it not so matter.
Also, maybe, measurements with 2 or 3 ohms load. Bbecause acoustic systems can have impedance drops down to 2 ohms. For example, Raidho TD3.8 has 2.98 ohms at 82Hz and Wilson Audio Sasha DAW has 2.48 ohms at 85Hz, and AMPLOI is stable for this.

What was your method for comparing against the Yamaha? Was it completely blind, statistically valid, and repeatable?

We have our Blind-test complex with hadware and software with statistics analysys. We use it. And... Daniel Kahneman - one of most liked by us scientists ) We have knowledges about measursements, tests, and cognitive biases.
We are for the Scientific Method!

Can you please clarify: is this a composite amp, i.e. an extra gain stage in the loop or did you do something like an even more elaborate two-pole compensation on the bare 3886 loop?

Yes, it's composite amp with extra OpAmp in the 3886 loop and 5-pole compensation. Also we have powered it with shortest ways with cascaded return-currents flow bypassing.

If someone in the USA wanted one, how would it be paid for and shipped, given that Russian banks were cut off from SWIFT?

If someone wanted - we'll find the way! )

Repairs should be pretty easy, as I'd expect semiconductors to be familiar brands (if Russian opamps exist, I'm not aware of them), and power supplies are by Mean Well. I think it's pretty cool that @GydruS has dedicated himself to high-quality sound reproduction, but for now, export potential is limited.

Yes, it has no unusual parts or russian opamps! And we even can give instructions to help! )
And thank You very much for your kind words! )

 

[Theodore8]

The "when" has already happened. Here are the two recent ones:

'MAG Theatron S6 Surround Speaker Review'

Jul 26, 2025

This is a review and detailed measurements of the MAG Theatron S6 home theater surround speaker. It was kindly drop shipped by a member and costs US $944 each.

This is a very compact speaker with super solid enclosure. So much so that the company ships it (and the M-12C I tested) come with no packing material! Speaker's normal configuration is with the tweeter below woofer and that is how I measured it (forgot to take its picture the same way). The waveguide is supposed to be asymmetrical, biased lower, to eliminate the need to tilt the speaker down (which would be...

• amirm
• Replies: 60
• Forum: Speaker Reviews, Measurements and Discussion

• 

'MAG Theatron M12-C Speaker Review'

Jul 19, 2025

This is a review, listening tests, EQ and detailed measurements of the MAG Theatron M12-C center speaker. It was kindly drop shipped to me by a member and costs US $2,299.

As you probably can tell, this is a very large speaker. I can imagine it has to be mounted behind a projection screen. The woofer is inset, likely as an attempt to "time align" it with the very deep tweeter (or is it to control its directivity?). Oddly the speaker terminals are on top and are the screw kind. Don't usually see that for speakers aimed for home applications.

Here are the specs...

• amirm
• Replies: 162
• Forum: Speaker Reviews, Measurements and Discussion

• 

A third is coming soon and is actually an amplifier as well!

Actually, the third already happened : it was the Verum Audio Verum 1 (Headphone), which had 80%+ fine/great ratings.

 

[Theodore8]

I actually voted “Great” because of the difficulty of doing business in Russia, let alone delivering a class-leading product.

 

[Ropeburn]

Even if this one has a modern standard input sensitivity, lowering it would make a lot of sense for "legacy compatibility" and be a valid design choice. People tend to have older gear that can't do 4V. I bet that's even more often the case in Russia.

 

[respice finem]

Just my 2 cents from Poland, and as a Ukraine supporter: There is no such thing as summary responsibility, or even more, summary justice.
If there were, Japan or Germany would not exist today. Not buying anything from companies who (even possibly) support "baddies" is one thing (which I support), summarily blaming whole nations for actions of their leaders is another.

 

[RickS]

Deleted some speculative and political posts. If you persist in posting those, may get thread banned or worse.

There enough other objective reasons one might not buy this amplifier, the political ramifications are too volatile and political discussion is to be avoided.

Thanks for your consideration and cooperation!

 

[Yevhen]

My comments related sanctioned semiconductors had rather legal aspect, not political or ethical. But ok

 

[amirm]

My comments related sanctioned semiconductors had rather legal aspect, not political or ethical. But ok

I will repeat my answer for you. While LM3886 was designed by National Instrument in US (now owned by TI), the actual IC was manufactured overseas. I looked up the origin of manufacturing on current parts available and they all say made in China. So the question you asked ChatGPT was not correct (you told it the parts were made in US).

Now, how the financial transaction works, I don't know. Maybe people are buying them in China and transporting them to Russia in which case there may be substantial mark up.

 

[RickS]

My comments related sanctioned semiconductors had rather legal aspect, not political or ethical. But ok

Yes, this is why added speculative to my post. Normally, speculative discussion might be fine, but tends to take this thread back to political discussion. If is very important to you, take to a new thread or direct message. Thanks!

 

[Yevhen]

Yes, this is why added speculative to my post. Normally, speculative discussion might be fine, but tends to take this thread back to political discussion. If is very important to you, take to a new thread or direct message. Thanks!

That is indeed wise, thanks

 

[mocenigo]

Great!

This is exactly what I want; I don't need
a lot of power (10 watts max).

I'm sure I'll build this thing myself, but
with a linear power supply, it's simpler, and the
CMRR of the LM3886 is 85 < 115 dB, so we should be able to
do something.

How sensitive are your speakers?

 

[mocenigo]

Not only they use transformers but some of the strangest ones I have seen, they are crazy in general about the metals used, probably cause this is their field of expertise:

View attachment 471315


At the thread amp, interesting combination, really good performance but limited in power, depending the use case of course.

SMPS use transformers, you know. And now can still add large capacitors after a SMPS.

 

[Sokel]

SMPS use transformers, you know. And now can still add large capacitors after a SMPS.

Of course it can, and at 180 kg per mono they spared no size, whatever it is:

Eclipse mono : HALCRO

The world's only Super-Fidelity audio

halcro.com

 

[Billy Budapest]

Of course it can, and at 180 kg per mono they spared no size, whatever it is:


View attachment 476248

Eclipse mono : HALCRO

The world's only Super-Fidelity audio

halcro.com

I see Halcro has been reconstituted. Always made interesting products.

 

[Scytales]

This is a review and detailed measurements of the SCIBER AMPLOI stereo balanced amplifier. It was sent to me by the company and costs US $4,900.
View attachment 471157

It occurred to me that this amplifier should have been awarded a "Soccer Panther" because it comes from a European country.

 

[magreen]

I thought I bought the next 'best thing' for the price and recently traded up to a 3e[Soyyin]AudioA7.

Are you happy with your A7?

 

[magreen]

No. They are in different classes of engineering excellence. A5:

AMPLOI:

Objectively we have to value the better engineering. You can't get that technology to do this.

Amir, I note you wrote "engineering excellence." Do you think those differences at higher frequencies would be audible as well? Such as listening to high violin frequencies, which are quite important to me in listening to music?

 

[xanalog]

Are you happy with your A7?

Yes.
I have fixed-volume levels from a device with RCA outputs and two DACs with XLRs outputs.
I had intended to feed the RCAs directly into it and use the A7's volume control for level adjustments. Unfortunately, for low-level (SPL) background music; the Volume knob becomes unusable for small level adjustments.
So, I was forced to add a FOSI ZP3 and to route the RCA and the XLR outputs thru it.
Now, the A7 has its volume control bypassed/disabled and I only use its XLR inputs from the ZP3 (XLR out) and its remote for master volume.

 

[amirm]

Do you think those differences at higher frequencies would be audible as well?

It is hard to make a case for audibility as the energy in those octaves is normally very low which means distortion products are many dBs lower than what you see in that graph. Of course, there are specific situations where that is not the case but as a general rule, I am not bothered by them.