StevieDvd
Headphoneus Supremus
- Joined
- Jun 14, 2004
- Posts
- 1,742
- Likes
- 89
Situation
Having recently decided to have a play with a cheapish tube amp and try a little tube rolling I bought a Bravo amp from Ebay. Now rather than spending a small fortune replacing components and trying out numerous tubes on this I decided to get a better budget tube amp as a base, the Little Dot MK III leapt to mind. Looking out for used ones in the for sale sections of a few forums and searching Ebay/Internet provided no contenders and I assumed it was an out of production model, at least by Little Dot. However there were some Hlly Mk III amps going cheap so I submitted an offer and had it accepted, the amp is now delivered and it works OK.
It now seems that it may be possible to get a Little Dot (MK III or VI) but I've got this Hlly one now so I'll play with that for a bit. If I can work out how to open the amp I may take some shots of the pcb & components if only to see which LD version it is closest to.
If all bodes well the rnext amp will not be a clonel!!!
Which tubes?
Power - 6N11, 6DJ8, 6922, E88CC, 7308 & apparently 6H30 will work
Driver - EF95, 5654, 6AK5, CV4010 & M8100 will work
The amp came fitted with Chinese 6N11 Power tubes and 5654 driver tubes. So I'm intended in try a few UK or Russian tubes to get a feel for the changes tube rolling can have.
Not knowing any UK shops or online stores I'm falling back on Ebay as a source (and checking the 'For sale' section here as well).
Is it better to go for matched pairs or just risk new or nos tubes?
How about these?
Driver Tubes
Mullard tubes from Taiwan
http://cgi.ebay.co.uk/2x-NOS-MULLARD-CV4010-VALVE-EF95-M8100-6AK5-5654-Tubes-/300432428611?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item45f32b0e43
Power Tubes
ZAERIX
http://cgi.ebay.co.uk/ECC88-6DJ8-ZAERIX-USSR-NEW-TUBE-VALVE-1-PC-/390186460467?cmd=ViewItem&pt=UK_Consumer_VintageAudio_RL&hash=item5ad8ece533
Russian 6N23P-EV
http://cgi.ebay.co.uk/Matched-pair-6N23P-EV-E88CC-6DJ8-Audiophile-tubes-NOS-/130392624788?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item1e5c018e94
Having recently decided to have a play with a cheapish tube amp and try a little tube rolling I bought a Bravo amp from Ebay. Now rather than spending a small fortune replacing components and trying out numerous tubes on this I decided to get a better budget tube amp as a base, the Little Dot MK III leapt to mind. Looking out for used ones in the for sale sections of a few forums and searching Ebay/Internet provided no contenders and I assumed it was an out of production model, at least by Little Dot. However there were some Hlly Mk III amps going cheap so I submitted an offer and had it accepted, the amp is now delivered and it works OK.
It now seems that it may be possible to get a Little Dot (MK III or VI) but I've got this Hlly one now so I'll play with that for a bit. If I can work out how to open the amp I may take some shots of the pcb & components if only to see which LD version it is closest to.
If all bodes well the rnext amp will not be a clonel!!!
Which tubes?
Power - 6N11, 6DJ8, 6922, E88CC, 7308 & apparently 6H30 will work
Driver - EF95, 5654, 6AK5, CV4010 & M8100 will work
The amp came fitted with Chinese 6N11 Power tubes and 5654 driver tubes. So I'm intended in try a few UK or Russian tubes to get a feel for the changes tube rolling can have.
Not knowing any UK shops or online stores I'm falling back on Ebay as a source (and checking the 'For sale' section here as well).
Is it better to go for matched pairs or just risk new or nos tubes?
How about these?
Driver Tubes
Mullard tubes from Taiwan
http://cgi.ebay.co.uk/2x-NOS-MULLARD-CV4010-VALVE-EF95-M8100-6AK5-5654-Tubes-/300432428611?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item45f32b0e43
Power Tubes
ZAERIX
http://cgi.ebay.co.uk/ECC88-6DJ8-ZAERIX-USSR-NEW-TUBE-VALVE-1-PC-/390186460467?cmd=ViewItem&pt=UK_Consumer_VintageAudio_RL&hash=item5ad8ece533
Russian 6N23P-EV
http://cgi.ebay.co.uk/Matched-pair-6N23P-EV-E88CC-6DJ8-Audiophile-tubes-NOS-/130392624788?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item1e5c018e94