2. amps-preamps
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Legendary used amp, or economical new one?

This past week a couple of my 30-yr-old vintage amps went awry. One, a VSP Labs TransMOS 150 developed a loud hum and got smokin' hot before I shut it off. The other, a Heathkit AA-1600, lost the left channel.

I may get them fixed, possibly to keep as backup or to sell, but I've come across yet another, a 100 wpc ultra-wide bandwidth Perreaux amp, also from the mid-'80s. The Perreaux has some features I've always been curious about in an amp but couldn't afford in a new one--distortion at .009%, bandwidth out to 3Mhz, and the accompanying rise time below 1 microsecond. I'd love to see how all that speed and resolution translates into sound quality, spatial cues, low level detail, and pinpoint timing--key elements in musically involving.

But I don't know how rugged Perreaux gear is, and maybe for the same money I should settle for a new Emotiva XPA 200 or a much less used Odyssey Khartago or Stratos.

Thoughts? Feelings? Opinions? Condemnations? :)
johnnyb53
halcro's avatar
halcro
2,664 posts
 
I bought a Perreaux PMF 1750 in about 1980 and used it every day for 30 years.
The only problem in all that time was the blue power light failed after about 1 year (which never bothered me).... And the spring behind the power-on button didn't retain its strength to push back out in the 'off' position.
Again this did not bother me as I kept it powered 'ON' for the full 30 years :-)
It was....and still is a superb sounding amplifier which was only surpassed in my system by the Halcro DM58 monoblocks about 5 years ago.
The Perreaux amps of the 80s were true high-end products designed and built by Peter Perreaux in New Zealand......and were better than those produced under the Perreaux name after that time.
I can still happily listen to it today.......
runnin
397 posts
 
Buying a 30 yr old amp is buying something that will break down soon, may not be running within spec any more and is just risky in my opinion.

I've owned 3 Emotiva products, including one of their XPA amps. They can suffer from solid state harshness with some speakers, I actually got sibilance, high frequency distortion at higher volumes with my speakers. I eventually sold that amp. The XPA-200 has a small transformer, something many of Emotiva's designs have.

Is there a 3rd option? Surely there is an amp 10 years old or so that you may find for sale. Or a new Parasound A23 for 950. They go on sale on Audio Advisor occasionally. I've got the A21, and compared it to my Emotiva amp. Superior sounding easily.

There's an A23 for sale on Audiogon, worth a look.
halcro's avatar
halcro
2,664 posts
 
Correction....I have the PMF 1850 power amp.
Sorry....
srwilsonmiami's avatar
srwilsonmiami
11 posts
 
I'm using a 3150 in my current system. Like another poster mentioned, the spring behind the power switch failed so I keep it in the on position permanently and control on and off from a power strip. I in face purchased an Odyssey Khartago ++ (basically a Stratos in a Khartago case) and although excellent, I prefer the Perreaux. It drove my Magnepan 1.6 speakers beautifully. It's a steal at what it's going for used. I'd love to have it refurbished if anyone knows a good resource.
rudolfogrease
37 posts
 

To:

@almarg

I just wanna follow-up on this power amp since I picked up one not too long ago and I need to know more about the amp. I was trying to get the schematic for mine and I notice my amp is slightly different for other 1150B I’ve seen from other amps in the PCB layout. even the power transistors doesn’t have a number in it. Any inputs would be great. Here is the picture link below.

https://i.postimg.cc/gc3zdPV4/SAM-2077.jpg

https://i.postimg.cc/Kj7x5nGC/SAM-2079.jpg

https://i.postimg.cc/tTxXYKLq/SAM-2081.jpg

https://i.postimg.cc/ZnzJ3fSr/SAM-2084.jpg


" I have, the Perreaux PMF-1150B originally sold for $1150 (the same as the model number!), in 1982-1985 dollars.

Also, IIRC, Perreaux’s "B" series models, including this one, corrected some significant sound quality issues that were present in the pre-"B" models."

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