I have recently had chance to have a good long weekend listening session to the Abyss + Formula S stack and I was very nicely surprised by just how good it sounds. Yes there was a difference between my usual rig however for the money there is no beating the Formula S Stack, it will easily drive...

On the DAC/Pre Amp side anything over 95dB is too hot for the HSA's input. So I typically run them at 90dB on the DAC and at around 70 on the volume control of the HSA. I would like to play with Roon's EQ to see what happens if I increase the sub 50Hz region by +2dB or so. I will need to cut...

Yes it will be fun, unfortunately I don't think I could get away with "borrowing" the Boulder, it also weighs 200KG's. I have had the SR1-a's and HSA on 24/7 burn in and they have improved an incredible amount. I now understand what reviewers have said by its not easy going back to any other...

No, it was just an earlier build. No difference in SQ. Afaik

I cannot comment on this as I have not heard the Schiit Amp. What is clearly apparent is that the SQ is highly influent by the quality of the Amp connected to the Ribbon Interface box. Over the weekend I will be trying out the Interface box plugged into a Boulder 3060 Stereo amp.

Sorted the issue out with excellent support from Danny @ Raal Requiste. I took off the top cover and during shipping a lead running out of the Transformer had dislodged itself. The new amp design does away with a lot of these blocks, so I can't see this as being an issue again.

Yep tried that, no go, now have sound through my MSB Headphone Amp + Abyss so no issues with DAC or cables. Really appreciate the solid support guys. Thank you

If the fuse was gone then the amp would not light up, can't think of anything else.

I have tried using another 4 pion cable for the right hand front socket for normal headphones. No sound there either. Must be an issue with the HSA

I have checked signal from DAC and done all the usual fault checking. The switch for voltage I made sure was on 240V

The switch is facing up as you said in your previous post. So to be clear Its up where it says Ribbon Earfield Monitors

There are two sets of banana plugs included do these need to be connected to the HSA?

Okay all that is done and the amp has power - still no sound from the SR1's??

I have just received today my SR1-a and HSA amplifier. I have it all connected up but no sound. I cannot find a manual or setup guide for the HSA. If anyone has a HSA I would really appreciate some help. I am using XLR's and have the Headphone hooked up with the supplied cable. There are 2...

Can someone confirm wether the SR-009BK is the same as the 009 or is it the 009S ? Many thanks!