liamstrain
Member of the Trade: The Audio Guild
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- Sep 18, 2011
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I'd probably go with the 600 then - if nothing else, they lower the noise floor on tube amp systems.
the LD Mk II puts out enough power to play nicely with 600 ohm cans. So, really its a question of flexiblity. Do you expect to use the 880 from a portable device (without an amp) at any point?
Ultimately, I don't think it matters much. I like the 600 ohm version, personally - but I do not think I could choose them in a blind test from the 250s...
I think you mean to say the LD Mk II outputs enough voltage to drive 600 'phones.
The 600ohms need plenty of voltage swing...hard to choose the right amp!
Yo,
The rule of impedance matching will be taking output impedance of the amp and multiplying it by eight. This gives you the minimum impedance of headphone you should use on the amp.
So, his there a way to figure the output impedance of an amp if it isn't listed?
So, Zombie_X, can you comment on the RPX-33?
So, Zombie_X, can you comment on the RPX-33?
Based on the sketchy spec they provide, the amp probably outputs 700 mW into 16 ohms.
If this is true and the output impedance is virtuallly zero then the RPX-33 will output enough voltage to drive 600 ohm DT880s.
Looking at the photos, it's built like a tank!
They give their THD noise spec for a signal at 32 ohms ([size=smaller]THD: [/size]0.02% (3Vpp on 32Ohm)) - it's possible they use that as their nominal for their other specs as well.