How much !

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Latteman
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How much !

Unread post by Latteman »

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Welder
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Re: How much !

Unread post by Welder »

Is that a lot these days?
I'm so far out of touch with what the 'vintage' gear sells for.
I must admit I wouldn't pay that much.
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Dr Bunsen Honeydew
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Re: How much !

Unread post by Dr Bunsen Honeydew »

Its an odd one as Richard Allen and Sugden were close to each other in Yorkshire and had friendship and a working relationship in those days. Worth that amount of money. Not my cup tea musically but a lot better than most in those day. It is this Class A business again, it it really Class A, no more so IMO than the highly biased ABs pretending to be A. Though I think Sugden had more justification in using it than most

True Class A is single ended, and that is far easier to do with valves than transistors, though there have been transistor ones. The thing they all have in common is if they claim over 15w per ch (and even that is approaching impossible) they are either lying, bending the figures, or it is not Class A

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Re: How much !

Unread post by _D_S_J_R_ »

Fifteen years or so ago, I bought an A21 for £25 that we'd been using as a loan amp when warranty repairs came in (DIN sockets and 4mm speaker terminals so sort-of compatible with Naim). It sounded shite really, all thin toned on both channels and little bass and this by Nait 3 standards! Nothing looked obviously wrong, but way outclassed today I reckon! To me, no way is it worth much, even with a non-standard front panel! When we took Sugden on at KJ in the late 70's, we had the last of this amp and it was alright but not really anything special even then, but what we were really waiting for was the A48 (all brown and orange nextel paint ;))

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Re: How much !

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It's got the magic number A21! It's about a third you pay for a new A21 these days which I'm sure sounds better.
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Re: How much !

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Dr Bunsen Honeydew wrote:
Sun Jan 13, 2019 5:58 pm

True Class A is single ended, and that is far easier to do with valves than transistors, though there have been transistor ones. The thing they all have in common is if they claim over 15w per ch (and even that is approaching impossible) they are either lying, bending the figures, or it is not Class A
I built a 50W single ended Mosfet amp from a Nelson Pass design. That must be class A. :)

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Dr Bunsen Honeydew
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Re: How much !

Unread post by Dr Bunsen Honeydew »

It looks to me like a variation on quasi complimentary with some Quad current dumping. I am sure someone will correct me if I am wrong, always open to learn.

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Re: How much !

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Dr Bunsen Honeydew wrote:
Sun Jan 13, 2019 6:40 pm
It looks to me like a variation on quasi complimentary with some Quad current dumping. I am sure someone will correct me if I am wrong, always open to learn.
It uses two of the same Mosfet, the top one is for constant current.(so Nick told me)

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Re: How much !

Unread post by Dr Bunsen Honeydew »

Two devices is either complementary or quasi complimentary. The second one looks like the current dump.

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Re: How much !

Unread post by valvesRus »

Dr Bunsen Honeydew wrote:
Sun Jan 13, 2019 6:56 pm
Two devices is either complementary or quasi complimentary. The second one looks like the current dump.
Nelson Pass says it's single ended and I think he knows his stuff.

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