audio-talk

simon wrote: ↑Wed Feb 21, 2024 7:48 pm Very interesting Ray. Do you send them a 3d dwg or dxf? I'll have to have a look on their website fir pricing.

I sent them a .step file, Simon. I used Fusion 360 to generate it, available for free for personal use.

pre65 wrote: ↑Wed Feb 21, 2024 7:26 pm Nice job Ray.

If I was really nit-picking I'd suggest countersinking the front panel screw holes so the fixing head was flush.

Taste Phil, the bolts were a deliberate choice.

Just about finished the project today with the addition of a front panel (3D printed by JLC).

I think I picked up the bargain of the year! I saw a pre-amp listed on DIY Audio - the guy said it was an Erno Borbely design but didn't know which one. I studied the photographs and had a hunch that it was the 1198/116 All-FET design so, as it was listed for a very good price, I took the plunge. It...

Cressy Snr wrote: ↑Sun Feb 18, 2024 10:04 am Now then! After squinting through the top plate mesh, with the use of a strong light and magnifying glass, I can confirm that the filter op-amps are indeed OPA1678s.

That's good then. Maybe just try the simplified filter board some time down the line...

Yeah, it'll be good to confirms Steve, my grey matter isn't so effective nowadays.

Surprised it too Putin so long but perhaps that's part of the torture...

Good result Steve. I know I'm conflating two of your threads here but just to remind that, IIRC, the filter stage of your RTZ has NE5532 op-amps and it would be good to get you a listen to one equipped with the OPAs, which we've all found to be an improvement https://www.audio-talk.co.uk/phpBB3/view...

The 'trim' is a nice touch, Steve.

Leon wrote: ↑Wed Feb 14, 2024 9:21 am Look forward to seeing how you get on with the valve output stage , did you ever try the discrete version of the CD enhancer ? I tried it with a Pioneer PDS904 quite a few years ago

Not tried the discrete CD Enhancer but will have a look.

I've removed the NE5532 and fitted the OPA1678's (Thanks Tony) Got to say guys just my opinion but I found the OPA's are noticeably better , its opened the sound up and sounds less compressed , better attack . Its obviously fiddly changing smd parts so caution if wanting to try it . Next thing to t...

I think that most evenings Ray Seems to be! 🙄 Love the look of that Beagelbone black , I need to look into that tbh I was expecting a huge PC was needed to run HQ player . You do need a powerful PC for HQ Player, mine is getting a bit old now but still benchmarks at something like 11000. The Beagle...

I don't know where this evening has gone! I prefer the JLSounds USB board to the Amanero but it would complicate matters with connections to the PCM2DSD module. I made some interface boards to hook a JLSounds board to a ValveDAC that I bult for a friend (Marcel's designs use the Amanero pattern head...

Leon wrote: ↑Tue Feb 13, 2024 12:37 pm ...could we use this as a discussion thread for this dac or maybe start something separate ?

Just in from work so I'll read the posts properly later but for now, sure, it's as good a place as any.

Ray