Plug in boards 32.5 versus 42.5

Posted by: raymond on 19 December 2002

I am currently using a 42.5 which I purchased 4 months ago. After reading the forum I was led to believe that the 32.5 was considerably better than the 42.5 so I purchased one. What a shock the 32.5 had been serviced in 2000 by Naim they had replaced all of the tantulums but didn't replace any other components as it wasn't necessary. The difference between the 32.5 and the 42.5 was quite noticeable, the 42.5 won hands down. The 32.5 had a very soft bass, and the top end was not as open as the 42.5. I left the 32.5 on for a couple of days for it to warm up before I made any comparisons. I checked that all the modules were in place ...which they were,all the connections were exactly the same etc. I swapped the pre-amps around quite a few times but the 42.5 was clearly the winner. The 32.5 was a very late version with the greeen led, the serial number being in the 4xxx. The results occurred on all the inputs and the phono modules were the K versions. I have since sold the 32.5. I was very disappointed as I needed the 32.5 due to it's extra tape inputs. Am I alone in my findings? I have since been advised to purchase a 72 but will I get the same results? I have always believed that having plug in boards was detrimental to sound quality no matter who makes it, and the least connections in the hi-fi chain the better. Do you agree? smile
Posted on: 20 December 2002 by Paul Ranson
I never saw any reason why a 32 would be better than a 42 except for the remote input switching. And the 42 has less circuitry than a fully loaded 32.

Did you try 'board pulling' the 32?

Paul
Posted on: 20 December 2002 by Ron Toolsie
As is common in computer hardware now, the 32 delegated more if its circuitry on the motherboard as compared to (I think) a clan of daughterboards on the 42. This probably allows for a truer common earth and less noise due to potential differences between nominal 0V sites. And noise is the nemesis of any preamp. Although I have had 2x42 and 1x42.5, I have never owned- let alone looked inside a 32. Somebody correct me if I am wrong.

Ron
Dum spiro audio
Dum audio vivo


Posted on: 20 December 2002 by i am simon 2
Raymondo

When I bought my 42.5 I had a choice of three pre's, 32.5, 42.5 and 62.

The price difference was small enough that it would not effect my choice, I had the orportunity to listen to them through my own speakers with a 160 (which I did in fact subsequently purchase).

I did not wnant to know which amp was which, I just sat and listend to music through the three amps.

They were all of slightly different vintage, so I dont know how conclusive the comparison was but here goes:

62 - The smoothest of them all laid back, articulate but warm, played a tune, but didnt deliver the slam that attracts me to Naim.

32.5 - Perhaps the cleanest fastest sound of the lot, but the example I listend to was almost to shouty, perhaps lacking depth, altough the control did seem to be there. Maybe this amp was to Naimy for my first venture into Naim.

42.5 - Delivered tunes with consumate ease, vice like grip on the music (well as vice like as you can get from a 18 year old pre amp that only cost 120GBP)The 42.5 had the pace and upfrontness that I wanted from Naim, without the way the 32.5 almost throws the music at your head in sharp little pieces.

I bought the 42.5 and have enjoyed it ever since. Maybe the 32.5 would benifit from a source beter than my Planar three and Planet 2000?

Now when you add a HiCap... but thats a different story.

Simon
Posted on: 20 December 2002 by Andrew L. Weekes
quote:
I never saw any reason why a 32 would be better than a 42 except for the remote input switching


You should look harder wink

A.
Posted on: 20 December 2002 by raymond
quote:
Originally posted by Paul Ranson:
I never saw any reason why a 32 would be better than a 42 except for the remote input switching. And the 42 has less circuitry than a fully loaded 32.

Did you try 'board pulling' the 32?

Paul
Hello Paul, no I didn't pull the 323/3 boards as I mainly listen to records. I wish I had tried this but I completely forgot to try this. This is my first venture into Naim gear mainly because there isn't a naim stockists for miles and I don't drive. In fact the 42.5 was the first bit of naim kit I have ever listened to, I wish I could have had the opportunity many years ago. I bought the pre-amp purely on spec as it only cost me £50. What's the term...Nothin ventured, nothing gained. Thanks for your positive reply.
Regards
Raymondo. smile
Posted on: 20 December 2002 by raymond
quote:
Originally posted by Cliff Patterson:
You must be hard of hearing, old chap. The 32.5 is absolutely miles better than a 42.5.

Listen to the noise floor difference if you can't hear anything else.

Cliff

_merry christmas to all_
Less of the old chap Cliff....I'm only a young 55.
Merry xmas to you also.
Regards
A very young Raymondo
Posted on: 20 December 2002 by raymond
quote:
Originally posted by i am simon 2:
Raymondo

When I bought my 42.5 I had a choice of three pre's, 32.5, 42.5 and 62.

The price difference was small enough that it would not effect my choice, I had the orportunity to listen to them through my own speakers with a 160 (which I did in fact subsequently purchase).

I did not wnant to know which amp was which, I just sat and listend to music through the three amps.

They were all of slightly different vintage, so I dont know how conclusive the comparison was but here goes:

62 - The smoothest of them all laid back, articulate but warm, played a tune, but didnt deliver the slam that attracts me to Naim.

32.5 - Perhaps the cleanest fastest sound of the lot, but the example I listend to was almost to shouty, perhaps lacking depth, altough the control did seem to be there. Maybe this amp was to Naimy for my first venture into Naim.

42.5 - Delivered tunes with consumate ease, vice like grip on the music (well as vice like as you can get from a 18 year old pre amp that only cost 120GBP)The 42.5 had the pace and upfrontness that I wanted from Naim, without the way the 32.5 almost throws the music at your head in sharp little pieces.

I bought the 42.5 and have enjoyed it ever since. Maybe the 32.5 would benifit from a source beter than my Planar three and Planet 2000?

Now when you add a HiCap... but thats a different story.

Simon
Thanks for the encouragement Simon...I feel a lot better now.
How did you know my nick name was Raymondo?
Merry xmas.
Regards
Raymondo.
Posted on: 20 December 2002 by raymond
quote:
Originally posted by raymond:
I am currently using a 42.5 which I purchased 4 months ago. After reading the forum I was led to believe that the 32.5 was considerably better than the 42.5 so I purchased one. What a shock the 32.5 had been serviced in 2000 by Naim they had replaced all of the tantulums but didn't replace any other components as it wasn't necessary. The difference between the 32.5 and the 42.5 was quite noticeable, the 42.5 won hands down. The 32.5 had a very soft bass, and the top end was not as open as the 42.5. I left the 32.5 on for a couple of days for it to warm up before I made any comparisons. I checked that all the modules were in place ...which they were,all the connections were exactly the same etc. I swapped the pre-amps around quite a few times but the 42.5 was clearly the winner. The 32.5 was a very late version with the greeen led, the serial number being in the 4xxx. The results occurred on all the inputs and the phono modules were the K versions. I have since sold the 32.5. I was very disappointed as I needed the 32.5 due to it's extra tape inputs. Am I alone in my findings? I have since been advised to purchase a 72 but will I get the same results? I have always believed that having plug in boards was detrimental to sound quality no matter who makes it, and the least connections in the hi-fi chain the better. Do you agree? smile
Thanks to you all for your input, but I had better shut up now or i'll be accused of hogging the limelight, This is directed to a particular dutch forum member.
Merry xmas to you all.
Regards
Raymondo.
big grin
Posted on: 20 December 2002 by i am simon 2
Surely everyone called Raymond gets called Raymondo, it is seems almost instinctive.

Simon
(who has never realy had a nickname)
Posted on: 20 December 2002 by Paul Ranson
quote:
You should look harder

I've never closely examined a 32, I do know that the circuitry is similar (in a mathematical sense...)

I have a doubt that a 32(5) will be substantially preferable to a 42 if your input needs are met by the 42. The 72 is obviously a slightly different animal.

Paul