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Tube Amp Philips Fidelio X2

Posted: Sep 12th, '15, 06:28
by werner
Hello,

I had a question regarding the Philips Fidelio X2 headphones and using a tube amp.

The Philips is a 35 Ohm headphone and I would like to pair it with a tube amp. Is the best option really the Little Dot Mk1+ for such a low impedance headphone or can I use a mk3 or mk4 / SE to power them. Also is it worth the additional money. I have heard the MK4 SE is a good match others said only the MK1+.

In the future I am also planning on acquiring a Grado headphone (also low impedance usually 32 ohms) and possibly others with higher impedance, so I am unsure if getting the mk1+ would be money wasted.

Could someone let me know what the output impedance are for the
mk1+, and at the various gain settings for the mk3 and the mk4s.

I assume you will have to unscrew the housing every time to change the dip switches to change the gain when using the amps, correct?

Thanks in advance for your help.

Werner

Re: Tube Amp Philips Fidelio X2

Posted: Sep 12th, '15, 09:05
by rockage
The best option from a price/performance standpoint will be the Little Dot I+ as it's specifically designed to power low impedance headphones. That said, the Little Dot MK III / MK IV will also have no issue driving the X2s although it would only be "worth it" if you are also driving other headphones as well. If you are solely using low impedance headphones, the Little Dot I+ would be the best choice.

For the Little Dot I+ you would need to open the chassis to change gain while the MK III and MK IV's controls can be accessed through holes on the bottom side of the amp. You should not have to change gain all that often as it's usually a best fit selection up front.