I am a user of Commission Designed / Built 845 Monoblock Power Amp's.
I have added a few cut / paste posts I have produced for other Threads, which are with Edits added for this Thread.
I have experienced in use all Amp' Types apart from being demo'd a direct from Bruno Putzey - Purifi Design.
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I feel like I have left out a recommendation of a Low Powered SS Power Amp' that has thoroughly impressed me during demo's in a variety of Build Models, which I have made known recollections of experiences I have had on this forum.
The Neurochrome Modul 65 has been in use in my Local HiFi Club as a SS Amp' demonstrator for quite a few years. This Amp' had been used in comparisons to both Valve Power Amp's - Valve Integrated Amp's and the same in SS.
It has been used driving Quad ESL's both Vintage and Modern, as well as much kinder loads for a Speaker.
Where it really showed it strengths, was at a time when it proved quite difficult to separate its presentation qualities during a comparison to a EAR 899 Power Amp.
With the resident 899 in the system used, the system Value is close to £50K
With the Modul 65, the system Value is closer to £40K
Neurochrome Amp's are today my top of the list consideration for Amp's when I retire from using my system that is totally Valve Orientated.
FYI, In a £200K System with a Soulution Power Amplification and a value of approx' £150ish K with the Neurochrome Modul 686 as the comparison Power Amp', the system was just as impressive with the 686 included, some from the short term demo' received made their preference for the 686 known.
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Bear in mind a fully loaded PCB for a Purifi Design as a DIY Build / Commission Completion can be acquired for between £300 and £600.
I would think that if the casing is not OTT on the aesthetic, the end Amp will be close to the £1K pricing for the upper cost model, even with Pure Copper RCA / XLR used and PC Triple C used as Hook Up wiring.
When assembled in a Casing there is little to compete, unless another wad of £0000's is spent.
I have also made known on this forum in another thread about a Import Chinese Origin, Four Box Modular Class D Power Amp compared to a £50K Soulution Power Amp on a £200K system, or £150 400 system with the Import Amp.
The system owner was completely bamboozled by the Import Amp being such a performer, the Soulution out performed it, but at £49 600 to attain the difference on offer. For the individual who was with the experience of the comparison, that becomes a very difficult decision to even consider.
Even more painful, is that on the same occasion, a Neurchrome 365 at approx' £2K built, at times with certain tracks was much more attractive than the Soulution.
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Try a Douk E6 in front of it with the upgrade that is referred to in certain posts.
I do think the Budget Class D and Budget DHT Pre will find a very pleasing synergy.
I put a few friends onto the E6, and one is after a period of trial, now seriously considering it for being a replacement for their Django TVC. This was unexpected, as I thought of the E6 only as a very affordable Pre', to be used for the dipping of ones toes into a DHT type Pre Amp.
The E6 was only presented to the group of friends, as another friend in the group, who is a very competent EE, has investigated and invested quite a few £000's in another UK based EE's DHT Pre Amp Design, that was getting good appraisals during the Honeymoon Period of its use.
Not heard the DHT yet in any of the types now available, but do know the report on the UK based EE's design has claimed it has transformed SS Power Amp's relegated from the Top of the Listing for their favour to a whole new level of presentation that are very attractive when experienced.
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In the USA any of the above Power Amp's are able to be found for sale.
Two of the Brands that are Kit Types, can be found hand built by very competent EE Skilled Individuals.
The E6 Pre Amp, is a pre-built Amp.
As an update, I have recently been given a short in length demo' of a Douk E6 with modifications. The E6 owner a few years ago, tried out a range of Pre Amp's on their system, with a value up to £5K, when they were updating their selection for a Pre-Amp. The system owner has made it known there are certain Albums they much prefer when replayed using the E6.
The E6 might just create a marriage that one can't detach themselves from when partnered with the Power Amp' that allows it to really sing.
