On 22/07/20 10:10, Kevin Cosgrove wrote: Sometime later The Pisound has been quite good for me. I use it for audio in (effects processing for an electric guitar, and soon voice) so there are four choices that I know of for Raspberry Pi 1) Pisound - What I have 2) Flatmax cards.  As far as I can tell they are out of business.  I can find no user reports that have anything good to say about them and a few bad reports 3) Zynthian They make a kit that is a complete (?) synthesiser. They are out of stock, and are not keen on selling the card separately.  But they are very responsive, and suggested I contact them in two months and they might be able to help.  We will see 4) Hifiberry - These are a possibility for me, I have not tried any out yet. I am happy with the sound quality, input and output. The Pisound is not perfect.  My gripes are (very personal. Others have different requirements): It is stereo and the audio inputs/outputs are 3/4 inch stereo jacks.   Almost useless.  I am in the process of rehousing the system and breaking out those stereo jacks into mono jacks.  I need to treat each channel on its own.  I really do not know what they were thinking, what uses a 3/4 inch stereo jack as an input? It pays a lot of attention to MIDI.  So do I, but I do not want my sound card paying any attention whatsoever to MIDI.  It has two MIDI ports, which these days are of no use, all my equipment has USB interfaces, only some have MIDI jacks, and none has only MIDI jacks.  I have also had to purge some of the utilites that came with it that tried to be "smart" about MIDI connections.  I do the smarts around here, I prefer my computers fast, quiet, and dumb. The very worst aspect is the lack of commitment to Free Software.  Their OS they derived from Raspberian has telemetry built in, a fact I discovered debugging network communications - found some network connections back to BlokasLabs - I spat the dummy and complained to them.  They made some excuses then went quiet.  I can find no source for any of the drivers for the cards, for the telemetry ("trust us" they said, really?) and so on. I am having terrible problems with Jack (e.g: bazillions of 'JackAudioDriver::ProcessGraphAsyncMaster: Process error' in syslog) but I do not think that is the fault of Pisound All in all I think it is quite a good sound card. Worik -- If not me then who? If not now then when? If not here then where? So, here I stand, I can do no other root(a)worik.org 021-1680650, (03) 4821804 Aotearoa (New Zealand)

I realize that my previous mail was pretty verbose and has not much on-topic information and I want to apologize for that babbling. I wrote that right after getting up in the morning, while sipping my first coffee and being in a slight hurry before leaving to work. My motivation was to give a confirmation on the principal working of the pisound o a RPi 3 Model B+ (for me). I'm using a FullHD HDMi display without issues. I am seeing occasional graphical freezes of up to several seconds, but never as long as you describe. Also that freezing display seems to be independent from the processing side of things - it never harmed the ardour recordings, live sound of the effects in modep (which runs in text mode), or DMX output when using it as a lighting desk via QLC+ on a LxQt desktop (AFAIR). Cheers, Edgar