Mouseboy007
New Head-Fier
- Joined
- Feb 23, 2011
- Posts
- 29
- Likes
- 10
Hi Guys,
I've so far swapped the stock chinese tube for 1x cryogenically frozen Russian 6N3P (http://cgi.ebay.co.uk/CRYO-SUPER-LIFE-6N3P-E-Hi-Fi-AUDIO-TUBE-2C51-5670-/300353336777?pt=UK_Consumer_VintageAudio_RL&hash=item45ee7435c9#ht_4674wt_1334). The seller said it was up there with the Bendix. It sounded a bit lean to me ... although I only gave it about a week before I swapped in 2x 'used' vintage 5670's. I'm not sure what variant the 5670's were, as one of them has no markings except a few red bits of ink that haven't yet rubbed off and the other just has a grey coloured military font that says 5670. Anyway, both of these got about a week of use before being swapped.
I've also swapped the DAC OpAmp for a LM4562NA .... I've since ordered a few more opamps and tried them yesterday, so I swapped the Headphone OpAmp for the LM4562NA and then tried the following for the DAC:
LME49720NA
OPA2107AP
OPA2132PA
AD826ANZ
I can't remember what I left in there, I think it was the OPA2107, but so far irrespective of tubes or opamps I've not noticed any significant differences.
I've ordered a better set of RCA cables today to see if that is my weak link. I listen via an AV receiver through a set of speakers rather than headphones and haven't spent too much time on critical listening yet, but was curious to see if any combination of tube/opamp would make me say 'wow' there's an immediata and obvious difference (good or bad) but so far everything has been just a little difference one way or the other.
So, my questions are:
1) How long should I run a burn-in on a tube/opamp - i.e. after how many hours of listening should I expect the sound to have improved./settled
2) I'm not sure what the 5670 tubes were that I swapped, but can get two used GE 5670's (I've seen the green ink on a pic of them, so am sure they really are GE) - would it be worth getting GE 5670's or for a bit more I can get a GE 5670 JAN or a 2C51 Sylvania. Would I be advised to get any of these at all?
Thanks guys!
Mouseboy007
I've so far swapped the stock chinese tube for 1x cryogenically frozen Russian 6N3P (http://cgi.ebay.co.uk/CRYO-SUPER-LIFE-6N3P-E-Hi-Fi-AUDIO-TUBE-2C51-5670-/300353336777?pt=UK_Consumer_VintageAudio_RL&hash=item45ee7435c9#ht_4674wt_1334). The seller said it was up there with the Bendix. It sounded a bit lean to me ... although I only gave it about a week before I swapped in 2x 'used' vintage 5670's. I'm not sure what variant the 5670's were, as one of them has no markings except a few red bits of ink that haven't yet rubbed off and the other just has a grey coloured military font that says 5670. Anyway, both of these got about a week of use before being swapped.
I've also swapped the DAC OpAmp for a LM4562NA .... I've since ordered a few more opamps and tried them yesterday, so I swapped the Headphone OpAmp for the LM4562NA and then tried the following for the DAC:
LME49720NA
OPA2107AP
OPA2132PA
AD826ANZ
I can't remember what I left in there, I think it was the OPA2107, but so far irrespective of tubes or opamps I've not noticed any significant differences.
I've ordered a better set of RCA cables today to see if that is my weak link. I listen via an AV receiver through a set of speakers rather than headphones and haven't spent too much time on critical listening yet, but was curious to see if any combination of tube/opamp would make me say 'wow' there's an immediata and obvious difference (good or bad) but so far everything has been just a little difference one way or the other.
So, my questions are:
1) How long should I run a burn-in on a tube/opamp - i.e. after how many hours of listening should I expect the sound to have improved./settled
2) I'm not sure what the 5670 tubes were that I swapped, but can get two used GE 5670's (I've seen the green ink on a pic of them, so am sure they really are GE) - would it be worth getting GE 5670's or for a bit more I can get a GE 5670 JAN or a 2C51 Sylvania. Would I be advised to get any of these at all?
Thanks guys!
Mouseboy007