Thank you for the advice.
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I have the MT 602 and itās a great little hybrid amp but its a definite no go for IEMs. Would not recommend: channel imbalance on low volume and hissing on a good number of the IEMs I tried because of a lack of gain.
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Cool what IEMās did you use with it?
I used my Tin T2 first and there was the occasional hiss. Then I tried the GS Audio GD3A and it was worse, the only other IEMs I have lying around are some KZ lol. Not gonna even bother.
Love the MT 602 with my 58x, though no effect from the tubes. Also tried the Ks LBBS(little black bell) earphone, oddly it was the most responsive to the tubes with a slight warmth.
Overall, lacks as an amp(edit: I mean in features) but I think itās a good deal if you have a bunch of headphones and no need for a balanced input. Would highly recommend at its price point 
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Here is a link for 4 x Mullard 5654 (matched)
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Cool, so do you recommend the MT-604 for planar IEMs like P1, and 7hz timeless?
Thank you for the link
I couldnāt say. I donāt use IEMs at home. I only use them when commuting. And I donāt own either of them. I use the GL2000 on the M604 it works brilliantly, as it does with all my other headphones. As the output for the M604 is A Class I canāt see why planar IEMs would be any different. Other reviews have inferred that the P1 is a bit bright and the tubes may mellow that out a little.
I also have the Loxjie P20 which worked equally as well. You could always order the M604 from Amazon, and If you donāt like it, send it back.
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Mine should be here tomorrow so Iāll give my P1ās the tubey berries 
and see what happensā¦
PSā¦if it works good then Iāll get a nice set of quad matched NOS tubes/valves to go with 
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Congrats!
I hope soā¦ But I am not sure about the Timeless tho.
The P1 is still one of my favorite IEM.
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Well the ampās in but numpty here thought he had a 4.4mm to 4.4mmā¦but numpty doesnāt 
so ordered a very nice and expensive iFi one which I should be able to pick up before the weekend 
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I hate when that happensā¦
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Well done 
Amazon uk, ordered the iFi 4.4 to 4.4 yesterday afternoon and delivered todayā¦everything now in place to test the P1ās (awaiting the Timeless) gonna let the tubes burn in till the weekend and weāll see how IEM planarās respond to a hybrid tube input as thereās no way on gods earth Iāll eq 
ā¦actually feeling quite excited 
ā¦
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Damn if anyone else can jam this on their P1ās + 604 then enjoy 
ā¦
No bass???
I canāt wait to try this amp with the Timeless, It just makes the P1 an even bigger audio gemā¦trying with Z1Rās but the bass gets a bit boomy for me but the soundstage is wider if thatās possible on that set 
ā¦almost HP like if I can remember what HPās stage like lolā¦
One thing reinforced here is that synergy can make or break a set imho, yes you can graph sets, and yes compare them using the same chain but that wonāt necessarily get the best out of themā¦
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You gonna look into more portable tube options now? 
Probably not as I only use my stuff on the barge ie at homeā¦The C9 would be my most looked at tube solution but that would hiss with my Campfire crewā¦some folks reckon a nu-tube amp card is in development for the DX300 
but I do prefer battery devices given my circumstances so maybe a C9 when iFi do a 4.4 iEMatch
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There are a few others outside of the c9 too like the phatlab phantasy II for example, I do like the look of the portable amp options that are around right now, although tube ones seem to be a bit rarer. I also would love a 4.4mm iEMatch, Iād rather switch to all 4.4mm.
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Yeah come on @sebastien_chiu_iFi kick some butt
Yep but aināt that single ended?..now running 4.4ās 
The original was 6.35mm, they updated it with 4.4mm 
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cool that makes sense
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