Show us your Power Amplifiers.

[The Fez 3,289]

2 minutes ago, TerryO said:

Considering it is a 1994 build this gorgeous looking Sansui 907 Limited is one very nice sounding amp, at a recent gtg it didn’t embarrass it self against a trio of $20k plus amps.

 

 

 

 

 

Certainly it is a 1994 extreme Japanese luxury build. However the inherent circuit topology predates that build date by some margin. Looking through this great topic I'm reminded once again, that circuit design and the "never ending" quest to "lower distortion without compromise" continues......The 907 is as you know an integrated amp....==Show us Ya integrated amps??

 

Here's a  Sansui power amp.. Lets see who may be able to identify this one??

 

 

 

[andyr 4,325]

16 minutes ago, The Fez said:

 

Looking through this great topic I'm reminded once again, that circuit design and the "never ending" quest to "lower distortion without compromise" continues.

 

 

The way I  see it, TF ... the "never ending quest to lower distortion " was a feature of Japanese amps of the 70s and 80s ... which resulted in amps with impressively low THD figures but a sterile sound (due to maximal levels of global NFB applied, in order to get to the low THD figures).  Nowadays, amp designers are interested in making an amp which performs well ... but also sounds good.    (Note: I'm not including Class D amps in this - as it seems they all have extremely low distortion.  I have no idea whether they use global NFB to achieve this ... or not.)

 

Andy

 

[mwhouston 3,967]

1 hour ago, andyr said:

 

The way I  see it, TF ... the "never ending quest to lower distortion " was a feature of Japanese amps of the 70s and 80s ... which resulted in amps with impressively low THD figures but a sterile sound (due to maximal levels of global NFB applied, in order to get to the low THD figures).  Nowadays, amp designers are interested in making an amp which performs well ... but also sounds good.    (Note: I'm not including Class D amps in this - as it seems they all have extremely low distortion.  I have no idea whether they use global NFB to achieve this ... or not.)

 

Andy

 

This is what I called the bad old days of transistor power amps. Thank the god of audio they finally got better. 

 

And yes Class D relies on GNF to exist. 

[Essence 21]

Denafrips Hyperion.

 

 

And the glorified on/off switch:

 

 

But because of the remote I can place the amp in an obscure/inaccessible location! I know the pictures doesn't do the amp justice, I'll take some better shots in the weekend, probably some internals shots as well!

 

Much thanks @Dacman

[Analogsound 9]

Luxman MB300 monoblock
I have kept until now about 9 years

 

 

 

Edited December 3, 2019 by Analogsound

[highcut28 23]

cheap and  v cheerful tpa3255 from China w 48V psu.

[Pim 104]

My pair of pizza boxes

[Willmax 576]

On 12/11/2019 at 5:09 AM, Luc said:

Very Rare Onkyo M-510 Grand Integra Stereo Power Amplifier.

 

Beautiful isn't it.

Under the bonnet pics are grainy but  you get the idea

 

 

The member here who owns one has promised to never to leave me alone in the same room/house with it or lend it as he doesn't trust me to return it.

 

He's 100% right too. 😍😍

This is the mother of all VU meters!!!

[Willmax 576]

No VU meters on this one, though the sheer musicality makes up for it in spades!

 

[Sinewave 18]

Update from me! So I have 4x Hypex NC400 mono blocks, and 2x stereo NC400 for mid/high duties, mono blocks for bass drivers on my beloved VAF i93 MK2 signatures 

[Sinewave 18]

Tri amping my VAF i93 MK2s 

[Shark 56]

Hi Guys, thought you may find some shots of my Transcendent Sound OTL Monos interesting. The circuits are slightly modified from the standard, and casework is all mine. They were completed about 10 years ago and still amaze me every time I turn them on. Cheers, Mark.

[Ittaku 2,917]

5 minutes ago, Shark said:

Hi Guys, thought you may find some shots of my Transcendent Sound OTL Monos interesting. The circuits are slightly modified from the standard, and casework is all mine. They were completed about 10 years ago and still amaze me every time I turn them on. Cheers, Mark.

That is a veritable buttload of tubes. Very nice.

[Pops110 2,384]

13 hours ago, Shark said:

Hi Guys, thought you may find some shots of my Transcendent Sound OTL Monos interesting. The circuits are slightly modified from the standard, and casework is all mine. They were completed about 10 years ago and still amaze me every time I turn them on. Cheers, Mark.

Holy crap Batman. Amazing. My wallet just started quivering at the thought of a revalve.

Edited December 4, 2019 by Pops110

[RankStranger 1,490]

1 hour ago, Shark said:

Hi Guys, thought you may find some shots of my Transcendent Sound OTL Monos interesting. The circuits are slightly modified from the standard, and casework is all mine. They were completed about 10 years ago and still amaze me every time I turn them on. Cheers, Mark.

Gorgeous deco casework, Shark. What material is it?

[mwhouston 3,967]

Newly built DIY “Precision” - 300W Holton inspired.

[TheOrb 18]

On 03/12/2019 at 8:18 AM, Sinewave said:

Update from me! So I have 4x Hypex NC400 mono blocks, and 2x stereo NC400 for mid/high duties, mono blocks for bass drivers on my beloved VAF i93 MK2 signatures 

Beautiful symmetry!

[TheOrb 18]

On 23/11/2019 at 11:58 PM, Willmax said:

No VU meters on this one, though the sheer musicality makes up for it in spades!

 

Signed on to your channel, Will – love it! I’ve been dubious about the merits of assessing sounds/products through youtube, but the difference among your different bits of gear is striking. The KWs sound pretty  special, too! Can’t;t help but feel the room/floor lets you down a bit though...

[aasza 2,646]

On 17/11/2019 at 8:41 PM, The Fez said:

Here's a  Sansui power amp.. Lets see who may be able to identify this one??

 

 

 

 

1975 Sansui BA-1000 

 

V-FET amp, only sold in Japan

 

[Shark 56]

10 hours ago, RankStranger said:

Gorgeous deco casework, Shark. What material is it?

Hi Rank Stranger, the Fascias are Acrylic, and the Transformer Top Plate is Billet Alloy as are the rounded corners.

 

Cheers, Mark.

[Winno 510]

The Benchmark mono’s are gone and these Cyrus Mono X’s replaced them. 
 

 

I’m happier than I thought I would be but they’ll be heading down to Sydders soon for some magic tweaks. They may be small but they’re not toys. They will be returning to me with a matching modded DAC XP+ to get the best out of them. 

Edited December 5, 2019 by Winno

[mwhouston 3,967]

There has been some likes for this amp build. Just one other image of the inside. 

[Willmax 576]

18 hours ago, TheOrb said:

Signed on to your channel, Will – love it! I’ve been dubious about the merits of assessing sounds/products through youtube, but the difference among your different bits of gear is striking. The KWs sound pretty  special, too! Can’t;t help but feel the room/floor lets you down a bit though...

Thanks for the sub' and your comments here, the room I have my HiFi setup at the moment, is a lot better than when I started out on this journey, I know it is far from being perfect or the ideal solution but it still provides me a great deal of enjoyment and that is important. Having said that,  I'm hoping to move on to a  much better arrangement in the near future, so fingers crossed!

 

[Bunno77 972]

Finally using the Halcro again. 

It is for sale so this might not have the usual weight but it is a fantastic piece of gear

[btd 98]

DIY amps,

Aleph, J, Mini, ACA.

 

 

LM3886 dual mono 

 

there is a LM1875 under my little work bench for testing things with.

 

SS in use 

Technics SE9060

Rotel RB1070

 

on the shelf

Adcom GFA555 series 1

Nad 2600 PE

Kenwood Basic M2A 

 

Tony