I would like some suggestions for a two headphone amp to use with my Martin Logan mikros 90s. I will also be using this with a Pono Digital music player. Can anybody suggest anything? If it were to be integrated, to drive speakers, so much the better.

I'm excited to try a tube amp. I'm happily using a Fiio E-11 portable, but would like a home tubed (or hybrid) solution.

Thanks to all!

Edit: I decided I would like an amplifier capable of driving a set of bookshelf speakers. Any ideas?

Schiit Vali Hyrbrid amp
 
http://schiit.com/products/vali
 
 
Bravo Audio Ocean Mini Valve Class A Tube Headphone Amplifier
 
http://www.amazon.com/Bravo-Audio-Ocean-Headphone-Amplifier/dp/B00A2QKSVI/ref=sr_1_20?ie=UTF8&qid=1397085110&sr=8-20&keywords=headphone+amplifier
 

Little Dot I+ 6JI X2 Tube standard Hybrid Headphone Tube Amplifier

http://www.amazon.com/Little-Dot-6JI-standard-Headphone/dp/B00A2QM5O6/ref=sr_1_30?ie=UTF8&qid=1397085203&sr=8-30&keywords=headphone+amplifier
 

Little Dot MK2 MKII 6J1 X2 6N6 X2 Headphone Amp Amplifier Pre-Amp Tube

http://www.amazon.com/Little-Dot-MKII-Headphone-Amplifier/dp/B00A2QMAI2/ref=sr_1_2?ie=UTF8&qid=1397085296&sr=8-2&keywords=tube+headphone+amp
 

HIFIMAN - EF-2A HEADPHONE AMP

http://www.amazon.com/HiFiMAN-EF2A-HIFIMAN-EF-2A-HEADPHONE/dp/B004357WL8/ref=sr_1_7?ie=UTF8&qid=1397085350&sr=8-7&keywords=tube+headphone+amp

Many thanks. Considering these for use in my office as well

http://www.ebay.com/itm/Polk-Audio-Monitor-30-Series-II-CHERRY-Bookshelf-Speakers-NEW-PAIR-/231199615730?pt=Speakers_Subwoofers&hash=item35d4922af2

wildgift said:

Many thanks. Considering these for use in my office as well

http://www.ebay.com/itm/Polk-Audio-Monitor-30-Series-II-CHERRY-Bookshelf-Speakers-NEW-PAIR-/231199615730?pt=Speakers_Subwoofers&hash=item35d4922af2

Click to expand...

Those look like some pretty decent little bookshelf speakers.
 
55-25kHz freq response so no huge need for a sub
and the specs say 20-100 watts power per channel, if those are RMS watts they will be plenty loud especially for an office.
 
 
I tell you there are so many new audio companies that are producing quality speakers and people aren't giving them a chance because they're not the big, old-school names like Yamaha, JBL, Altec Lansing etc. that everybody is already familiar and comfortable with.

wildgift said:

Many thanks. Considering these for use in my office as well

http://www.ebay.com/itm/Polk-Audio-Monitor-30-Series-II-CHERRY-Bookshelf-Speakers-NEW-PAIR-/231199615730?pt=Speakers_Subwoofers&hash=item35d4922af2

Click to expand...

They are pretty good for $100. What will you use to power them?

The Pioneer SP-BS22-LR are good as well and can sometimes be found on sale at BestBuy or Amazon for around $100.

Also, to hook up a speaker amp, a headphone amp (or amp/dac) with pre-amp capability and/or line outs would be a plus if you are going to use these speakers on the same computer.