Got the DT 770 Pro 80 ohm. Damn it's good. Cute Beyond seems to be able to drive it fine, although I don't have any other amp for comparison.   Quick first impressions: - Very comfortable, although it does make your ears warm, but that's to be expected from closed cans. - Enough of...

I don't know can the volume's shunt mode affect output impedance, but I would guess not, or at least not much. I probably won't open my Cute Beyond, so I can't test that.

Well I ended up ordering DT 770 Pro 80 ohm.   After reading (too many) opinions and reviews, I concluded that the 80 ohm version should be a good choice for me. It should have more bass than the 250 (even though the bass extension can be similar), and according to Beyerdynamic's website, the...

From what I have gathered after reading a lot of opinions on the DT 770 Pro 80 and 250 headphones, it seems quite clear that the 250 ohm version of DT 770 Pro is brighter and/or has more treble extension, just like stv014 mentioned. And the treble extension can be a good or bad thing, depending...

I bought a new power supply, it's Mascot 9619, 24 volt model (www.mascot.no, it's Norwegian). It's supposed to be internally adjustable between 24 and 30 volts, it's rated to 1,3 amperes, and 39 watts maximum, so it's quite a bit more powerful than the one included with Cute Beyond.   By...

Alright, so if the bass extension is similarly good on both 80 and 250 ohm versions of DT 770 Pro, that in fact makes the decision more difficult for me. I think I could live with either the 80 or 250 ohm version, but I want to make a choice I won't regret later on. Buying them both would be...

Driven by a headphone amplifier with an output impedance lower than 1 ohm (Cute Beyond in my case), which of the DT 770 Pro versions has better bass extension, the 80 ohm version, or the 250 ohm version? (By bass extension I mean which outputs lower frequencies.) I have read that the 80 ohm...

The output impedance of Firestone Audio Cute Beyond is less than 1 ohm. I ended up measuring it myself to get peace of mind.   The output impedance varied between ~0.05 ohms and ~0.5 ohms, depending on the output load and volume/gain setting.   At very high volume settings the output...

I have a Firestone Audio Cute Beyond headphone amplifier. It is the "newer" model, which has been available for a couple of years already I think. It has a 6,3 mm (1/4") headphone connector and, according to the specs, an OPA2604. The specs do not tell what is the output impedance (which is a...

2 part post: 1. What is it exactly that makes the Surestone Audio Supplier power supply better than the "wall wart" that seems to come with Surestone products? I want to use Surestone Audio Cute Beyond headphone amplifier as an example. From what I have read, it comes with a 24 V 0,5 A AC...