help me imporve this tube amp please
Oct 3, 2011 at 3:01 AM Thread Starter Post #1 of 8

dodawasthere

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hey , i got the Little dot mk 3 for a while with the stock amp
can you in a simple words tell me what to change exactly there is 2 small tubes and 2 big tubes , which one need to change , please dont give me a link to other thread just give me what you advice and if possible a link to buy what your talking about , i got my hd650 and its great but  i want it to be more detailed and over all better improving perfomance , my money around the 50$ 
thanx
 
Oct 3, 2011 at 3:19 AM Post #3 of 8
woha this is the most relief inexpensive  replay ever
L3000.gif

 
Oct 3, 2011 at 4:18 AM Post #5 of 8


Quote:
woha this is the most relief inexpensive  replay ever
L3000.gif



For the driver tubes (small ones) 5654 are compatible, for the power tubes you'll need 6H6PI but i've no idea if upgrading the power tubes makes any difference.
 
So just look for 5654 tubes for now.
 
Matched pair of Sylvania Gold Pin might be nice
http://www.ebay.co.uk/itm/2-matched-Sylvania-Gold-Pin-GB-5654-6AK5-6J1-tubes-Gray-Plate-Top-O-Getter-/360397302214?pt=Vintage_Electronics_R2&hash=item53e95a69c6#ht_1560wt_1163
 
Or Raytheon 6AK5 will also work and are highly rated amongst head-fiers
http://www.ebay.co.uk/itm/2-matched-1946-Raytheon-JRP-6AK5-tubes-Black-P-/270661189092?pt=Vintage_Electronics_R2&hash=item3f04a9fde4#ht_1755wt_1163
 
Ones i've tried and really like are the Mullard M8100
http://www.ebay.co.uk/itm/M8100-MULLARD-6AK5-EF95-E-MATCH-PAIR-NEW-VALVE-TUBE-/390325556994?pt=UK_Consumer_VintageAudio_RL&hash=item5ae1375702#ht_685wt_1163
 
You need a matched pair like the links above and not just 1 tube on its own, also remember the differences will be subtle, might not be worth the cost to you.
 
Oct 3, 2011 at 4:38 AM Post #6 of 8
wish all ppl help like what you did , another thing , is there a certain tubes to use with a low impedence cans like the denon d2000?
thanx alot 
 
Quote:
For the driver tubes (small ones) 5654 are compatible, for the power tubes you'll need 6H6PI but i've no idea if upgrading the power tubes makes any difference.
 
So just look for 5654 tubes for now.
 
Matched pair of Sylvania Gold Pin might be nice
http://www.ebay.co.uk/itm/2-matched-Sylvania-Gold-Pin-GB-5654-6AK5-6J1-tubes-Gray-Plate-Top-O-Getter-/360397302214?pt=Vintage_Electronics_R2&hash=item53e95a69c6#ht_1560wt_1163
 
Or Raytheon 6AK5 will also work and are highly rated amongst head-fiers
http://www.ebay.co.uk/itm/2-matched-1946-Raytheon-JRP-6AK5-tubes-Black-P-/270661189092?pt=Vintage_Electronics_R2&hash=item3f04a9fde4#ht_1755wt_1163
 
Ones i've tried and really like are the Mullard M8100
http://www.ebay.co.uk/itm/M8100-MULLARD-6AK5-EF95-E-MATCH-PAIR-NEW-VALVE-TUBE-/390325556994?pt=UK_Consumer_VintageAudio_RL&hash=item5ae1375702#ht_685wt_1163
 
You need a matched pair like the links above and not just 1 tube on its own, also remember the differences will be subtle, might not be worth the cost to you.



 
 
Oct 3, 2011 at 7:15 AM Post #7 of 8


Quote:
wish all ppl help like what you did , another thing , is there a certain tubes to use with a low impedence cans like the denon d2000?
thanx alot  
 



Impedence doesn't matter really, with the Denon's you'll likely want a tube that will bring out the midrange a bit more, someone else might be able to tell you which one is best for that.
 
Oct 4, 2011 at 5:00 AM Post #8 of 8
No, you're supposed to use output transformers with low impedance headphones. The only tubes that do low impedance well are ones like the 6C33C and 6C41C. Those won't work in your amp.

Either that or go solid state, which almost always has a low output impedance.
 

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