[Shanling]

Using the balanced output the dual dac mode is always active?

Yes, that's the point of balanced mode.

 

[weeeeesquirrel]

Both phases + & - are amplified in a balanced scenario

 

[16tons]

Is this enough to drive a sennheiser hd 600?

 

[weeeeesquirrel]

The HD600 are not hard to drive so yes

 

[weeeeesquirrel]

I broke out my HD650 for ya to verify… Single ended it can drive them all 3 gain levels. High Gain & Dual DAC mode drive them the best depending on source material. I don’t currently have a balanced cable for HD650 but I would assume they sound best balanced. Higher ohm prefer higher voltage vs higher current for low impedance. They sound really good single ended and the 650 are a little harder to drive than the 600.

 

[Shanling]

Is this enough to drive a sennheiser hd 600?

We would recommend going at least with the H5 if you want to power HD600 to some acceptable levels.

 

[wandargo]

Are some firmware available today? Thx

 

[Shanling]

Are some firmware available today? Thx

No, there was no firmware update for UP4 22.