[nakedtoes]

Grado been a very low impedance and sensitive phone which tube amp can drive it at higher volume without hiss or hum??

 

[Uncle Erik]

I think the Millett Hybrid does a nice job with the HF-1. They're inexpensive, and easy to find or build yourself.

If you're a DIY type, you might want to pick up Issue 16 of Vacuum Tube Valley. In it are plans by John Dickman for an all-tube headphone amp he built specifically for the Grado SR-80.

I found his design interesting enough to order the parts- I got the output transformers, tubes, caps, and resistors in the mail today. The power trnsformer is on the way, as well as a few more parts. I intend to take a whack at it over the long weekend.

Before I get too much into my project, take a look at it if you're interested. Total cost of the parts was about $150. If it works as advertised, I think it'd be a real bargain.

 

[munkong]

I want to know too

if I don't want DIY tube amp, which is well match?

 

[SK138]

If you do a seach here, Mapletree Ear + Purist HD gets highly recommended with Grado cans. Then again, Woo3, with right tubes and high input gain from decent source is pretty good too. I am using Curcio CD12V Tube DAC with my Woo3 and it's wonderful. It almost sounds like my PinkFloyd modded X-CAN V2 with hint of more tube warmth.

 

[go_vtec]

Singlepower PPX3 SLAM or MPX3. Absolutely quiet yet powerful.

 

[Gradofan2]

My choice...

http://www4.head-fi.org/forums/showthread.php?t=186852

htt://www4.head-fi.org/forums/showthread.php?t=186462

... it's the price/performance winner!

or... perhaps the Mapletree EAR Purist+ HD (see Mrarroyo about this one).

GF2

 

[ghiberti]

I think I have to try mapletree to know how good it is with my RS-1 compared with Earmax AE and upper Rudistors

 

[squall2072]

Can't say I can complain about the PPX3 SLAM. Does nothing wrong for me

Very happy with it and the RS-1's!

 

[utarch00]

I would have to say the Millet or X-Can.

 

[Sanddancer]

Another vote for the Mapletree/RS-1 combo. Admittedly though, it's the only tube amp I've heard them through.

 

[nakedtoes]

Any other MIC amps??

 

[mrarroyo]

Mapletree Ear Purist + HD.

 

[tom hankins]

Both the Singlepower amps I have owned were dead quiet with tons of power for the Grados I used with them. 225, 325, RS1, PS1.

 

[dan_can]

Didn't like EAR+ HD with Grado SR-325i a bit, loved it with HD650 and A900LTD, maybe I'm just not a Grado guy.

 

[biged]

I know Kwkarth likes the Dared Mp5 with a 225 ( I think).

Ed