[Rockyhill]

 
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More Pictures Moar Pictures!!

 

 

 

[moodyrn]

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I always thought that a higher impedance meant it's more demanding, power wise...

What determine if a headphone is hard to drive or not is it's sensitivity, not impedance. Now a lot of amps do struggle with high impedance headphones because some amps for example, a lot of solid state amps, might not supply the necessary power in a high impedance load. With typical ss designs as the impedance increase, the power decrease. Speaking hypothetically, if it puts out 800mw at 32ohm, it might output something like 150mw at 600ohms. Other designs, like typical otl tube amps, the power actually increase as the ohm load increase. so at 600ohms, it might output 800mw, but output significantly less at 32ohms.
 

 

[popa]

This what Garry says of the 6J8p tube--

The little hum is mainly coming from the brand new 6J8P. It could become smaller after 200 hours. It is more noticeable on <32ohm headphones. It is hardly noticeable on 60-300ohm headphones. If you really care about the little hum, you can get a pair of the RCA/Sylvania 6SJ7, 5693 or 6SD7 from eBay. They have less noise and hum. The Sylvania 6SD7 sounds very good to me. It opens up the high extension significantly, but it might not suitable for bright headphones.
 
Another method to minimize the hum is to switch the cold and hot AC wires in the power cord. If it becomes smaller, you get the right phase.   ____I did look at Ebay but I ordered mine thru surplus sales of Nebraska. They have alot tubes.

As far fit and finish I am more than satisfied.

 

[popa]

Quote:

This what Garry says of the 6J8p tube--
"
The little hum is mainly coming from the brand new 6J8P. It could become smaller after 200 hours. It is more noticeable on <32ohm headphones. It is hardly noticeable on 60-300ohm headphones. If you really care about the little hum, you can get a pair of the RCA/Sylvania 6SJ7, 5693 or 6SD7 from eBay. They have less noise and hum. The Sylvania 6SD7 sounds very good to me. It opens up the high extension significantly, but it might not suitable for bright headphones.
 
Another method to minimize the hum is to switch the cold and hot AC wires in the power cord. If it becomes smaller, you get the right phase."   ____I did look at Ebay but I ordered mine thru surplus sales of Nebraska. They have alot tubes.

As far fit and finish I am more than satisfied.

 

 

[Rockyhill]

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Which one did you order? I'm considering Sylvania 6SD7 as my speakers could use a little high end boost. Low end and mids are excellent.

 
 

 

[disgruntleddave]

Good to know.
 
Any impressions with headphones?
I've got HD600s which are beckoning to be driven from a proper amp...

 

[popa]

...
I have 2 6SD7 brand name PHILCO. I have also got 2 6SK7 tubes brand name KEN-RAD.The 6SK7 are JAN tubes accepted in 1943.They are also metal cans

I haven't tried them yet.I am really curios if they make a difference.

 

[carebebear777]

very pretty amp for $250, that's for sure.

 

[mrarroyo]

$250 and it will do speaker as well as headphone. The form factor is different, now it is deeper and narrower.

 

[3Pillars]

I wonder if the SQ from the headphone out will be equal to the speaker outs.

 

[popa]

My HD570s sound real good. My HD595 and ATH-M50s do not sound as good. The last two are low ohm sets. I do think higher ohm set will far much better.
 
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Good to know.
 
Any impressions with headphones?
I've got HD600s which are beckoning to be driven from a proper amp...

 

 

[Monday]

Hi all.  I'm new here to the form.  I've been trying to take in the copious amounts of information that exists on Head-Fi - wow. 
 
Some of this lead to finding the MP mkII which I am very interested in.  I like the idea of being able to drive speakers as well,  as that gives me an upgrade path [the spkr/headphone amp can be moved to the office and be replaced by the next thing on my home system]. 
 
I am curious how this will stack up against the MingDa which many seem to like.  And, as others, I am VERY interested in how headphones sound through it. Also anxious to hear how the hum issues work out - apparently the first version was pretty quiet.

 

[eclein]

Hey guys....I have a MP-301 original and friggin love it. I bought it for cans only but as an avid collector/gatherer/horde of JBL's I had to hook it up to some JBL ND310II and they are still playing sweet music with the MP 301 powering it.
                   
JBL ND310II

 
  then the 4312A Control Monitors

 
 
 ...and my personal favs S38II's

the synergy with these is perfect....so anyway I plugged in some headphones- modded Grado SR60's and SR125's, then I had to sit because I was listening to my ideal amp, small room, no one else to bother with, $250-"That must mean I'm dead and in heaven" nope, just Musical Paradise..drum roll, splash!!!!!
 I hang mostly on audiocircle and the guy there told me to get TUNG SOL  -6V6GT  like $35 shipped for a matched pair....I'm saving for MK2, I'm disabled and pretty much can't walk let alone play drums again....scary stuff but the music is nice!!!
 

 

[jeust0999]

haha, that was a pretty funny joke. Nice one.

 

[Rockyhill]

Anyone else get their MK2 yet?
 
Popa, have you tried the PHILCO 6SD7 yet?