I ordered two similar PCBs from EuroCircuits. The first one (PCM2702 USB DAC Rev B) was perfect in terms of manufacturing. It was exactly what I expected and exactly what I saw in Eagle. The second one (Alien DAC v1.0) was a bit of surprise. Pads and silk were different from what I imagined. I...

I am looking for information on 7-pin zip package (2SJ109, 2SK389). An Eagle library would be perfect. However package spec or even a library for other tools would be of great help to me. I would appreciate any information on the subject.

I am looking for the best 0805 100nF capacitors for decoupling. Any recommendations would be much appreciated. Manufacturer? Series? Dielectric type? Something else?

I am looking for a file with Eagle design rules for EuroCircuits "Verified" service. It appears that the default file supplied with Eagle is for Olimex but EuroCircuits can do much better than that. If such a file does not exist, can someone help me to create it? Your help would be much appreciated.

A47-based headamps use 2 opamps per channel to get more juice out of weak chips. I wonder whether this approach would have any benefits over a simple CMOY approach with 1 opamp per channel if used with AD8397. Any thoughts?

I have some SMD soldering to do soon – hopefully PCM2702 USB DAC prototype boards will be delivered by the end of the month. This will involve a tiny SSOP28 and a few SO8 parts. Currently I have Weller PS-2D 50VA 240V/24V + Weller TCP 24V/45W. But me thinks 45W may be too much for SMD. What...

I always wanted to build PCM2702 USB DAC also known as Guzzler’s DAC. I contacted Guzzler but he was completely out of boards. I realized that the only chance for me to build the DAC is to order the boards myself. Guzzler has kindly sent me his Eagle files and has been very supportive. The...

OK, boys and girls. Here goes another help-me-waste-my-money thread. I think that I would like to upgrade my headphones to something more “higher end”. The problem is that I cannot make my mind. I hope that you guys can help me to part with my money easily – you are so good at that. What...

I consider adding Guzzler's DAC to my PIMETA. The current configuration is unregulated wallwart producing 17V -> TREAD regulating down to 13V -> PIMETA. I noticed that PIMETA uses virtual ground while the DAC's gound is V-. I believe that if I connected them both to TREAD in parallel, this...

Has anyone compared Guzzler's DAC to EMU soundcards (in particular 0404)?

I am working on Tangent's PIMETA. I am doing everything by the book and got to the stage 9 of Tangent’s guide “Test the amp”. I checked the voltages at the chip supply pins. They were about 8.5V (17v power supply). Fine. Then I installed the chips: OPA637, OPA627, and 3x BUF634. Turned...

Can someone recommend good hookup wire and where to find it in the UK? Obviously I don't need 100m reels. Ideally it would be 3-5 colours, 3-5 meters each.

Is there good software for designing stripboard layouts? Sorry if I am asking an obvious question. I could not find anything suitable on these forums or on Internet.

I just installed the new driver. It seems that they have fixed the PCI latency problem that causes sound cutting in games. I played America's Army for 30 minutes with the new driver. So far so good. No problems whatsoever. So fellow gamers, rush to the download section and enjoy your EMU 100%.

Is there any way to set EMU 0404 to output two independent stereo channels via analog connectors using both in and out sets of sockets? The goal is to listen to some music while my daughter enjoys her favorite films (PC to TV). I am able to do this with kx drivers and my old sb live. Can I...

I cannot believe I missed it from the specs. I just installed my brand new EMU 0404 and realised that I cannot connect my headphones (HD590). EMU 0404 has two mono outputs while my headphones have a stereo jack. I looked on Internet for an adapter but could not find anything 100% suitable...