Very curious too :) It also uses a top quality dac chip vs the standard grade in the base orchid. That alone may explain a big portion of the price difference as the S2 version are difficult to find and can get very expensive.

I tried 3 different tubes and no tube... the hum didn't change. I tried connecting it to another outlet with a different power cord, still no changes :( I will try it in a different room to be sure. I also thought it could be a ground issue, I even thought of connecting the ground terminal to...

I have contacted the manufacturer some days ago. I didn't get an answer back yet, most likely due to the holidays period (Chinese New Year).

Hi David I will test tomorrow with another amplifier tomorrow. Good suggestion. The Yamaha doesnt have any dac, I have another separate Dac that I use more frequently connected to the yamaha and zero issues. Thx

with USB I can play 192khz ... anyway, I can live without this function but I can't live with this noise. Here is a small clip I just recorded: it was working fine for around 1h and then the issue started again. I'm not playing music in this clip, there isn't even any signal going into the...

Thx, yes, I'm waiting for mhdt feedback, let's see what they say. I bought the dac recently but it was second hand so I don't know how many years... I wasn't lucky at all with this purchase, I can't play 192khz high-res file from Qobuz, even if in the user manual it says it should (below that...

Hi Mike Thank you for this indiction. One point to add, this morning I turned the dac on and it is working fine but I only played one song. Yesterday it was working fine too but after 1h or so the noise started. Apparently this issue manifests itself as the dac warms up, could it be? later...

I'm using an Yamaha AS2100. I have no issues with another DAC I also use, or CD player etc... so I don't think the issue is in the amplifier. What do you think?

I just send mhdt an email, waiting for their answer. This is a very recent issue, just identified it in the last 2 days.

Hi all I have been having issues with my Orchid, I hear a very strong hum noise when the dac is turned on and it doesn't go away, even when playing music, even if the music masks it a little. The noise is very evident and I'm wondering if it is not working properly and I'm afraid the dac will...

I'm interested, just sent you a private message :)