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Antonio J. wrote:

- Regarding C2 the 2000uF/450v cap, he suggests to replace it with 5 x 200uF/200V by Mundorf (he can get them for a good price, probably better those five caps than a single 2000/450). I'm not sure about this replacement, it could change completely the sound or maybe not, but he says 450V is quite a lot and maybe not really necessary. My knowledge is 0 so advice is needed.

Nope. This cap should be 450V as it will be 400V in it during the amp operation. Get any 450V cap of any brand and do not worry about the “quality” of C2.  What defiantly do not do is peruse the audiophile grade caps like Black Gate and the rest garbage. Do for any commercial grade: Cornell Dublier, Nichicon, Nippon Chemi-Con and many others. Do not worry about the cap brand at this point

Antonio J. wrote:

- C10> He suggest using three caps of the same type, the Mundorf HV 200uF/200V.

I would keep the C10 above 250V. it all depends what operation voltage you select. Keep the C10!50V above the plate voltage and you should be save. I do not know anything about the Mundorf caps, it presumable you European brand.

Antonio J. wrote:

- C3 (electrocube) to be replaced for a Mundorf silver in oil 3.3 uF. In his opinion the Mundorf is the best cap for that application.

The C3 is superbly important cap and it will highly affect how the amp sounds. I personally do not like any oil-based capacitors. They might in some way behave OK in speaker level placations but form my point of view they are not useable as coupling capacitors. Most likely he will charge a fortune for this silver in oil cap. I did pay that fortune trued them and I do not use them. Still, I never tried the Mundorf brand.

Antonio J. wrote:

- He can't find wire-wound non inductive Vishay/Dale CW or RW resistors. He can get some other non-inductive resistors, but not exactly those. He not either can find the VR1 trimmer which he says is very "exquisite". I would be very thankful if you could address us to some reliable provider of the Vishay/dales or suitable substitutes.

It is fine, use whatever resistors he/you fine appropriate and convenient. The parts selection is suggested but some parts are no critical.

Antonio J. wrote:

- Delay Timer There's nothing specified about the circuits. He has his own design, but he doesn't know if it would meet the requirements. Hence some description or schemes about the timer's circuit are needed.

No requirements in there. Let him use any reliable 10-15A relays. I personally us the Magnecraft time delay that I tested and found perfectly acceptable. If you wish I might hive you the model number.

Antonio J. wrote:

- Binding Posts = He suggests using some heavy Monacors since those are the ones he used in some other projects, but maybe you have experimented with others and find them more adequate.

I do not know the Monacors . Years ago, When I built external crossover for Trios I bout all existing in US Binding Posts and it turned out that the most famous hi-fi brands were the most horrible. The best were the “Superior Electric” the cheapest looking but the most transparently sounding binding posts.

Antonio J. wrote:

- RCAs = he uses Monacors too, but maybe other make are better.

I do not know. I do not think that this is critical for this amp. Let him use whatever he trusts.

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