Re: [LAU] Sound quality of the Focusrite Scarlett 18i20 2nd Gen

On Sun, 8 Jan 2017 23:29:31 +0100, Johannes Kroll wrote: I couldn't use the same cables for the RME and the Focusrite test, the cables used for the Focusrite were better, newer, shorter. However, directly connecting the Focusrite by a balanced cable to itself, there isn't audible anymore, what still is audible, when connecting the RME and the Focusrite to other equipment by unbalanced cables. I've got an Ardour5 test as 179M tar.gz and could send it of list to some people, if you off-list ask me to do so. I'll sent it to you Johannes, you don't need to ask. More details, especially important in regards to the level of the Focusrite: [rocketmouse@archlinux ~]$ uname -rm 4.8.13-1-ARCH x86_64 [rocketmouse@archlinux ~]$ rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 121 FF 90 - 130 0.0 S irq/19-ehci_hcd 126 FF 90 - 130 0.0 S irq/16-ohci_hcd 146 FF 89 - 129 0.0 S irq/17-ohci_hcd 151 FF 88 - 128 0.0 S irq/17-ohci_hcd 271 FF 85 - 125 0.0 S irq/18-snd_hdsp 32 FF 50 - 90 0.0 S irq/9-acpi 48 FF 50 - 90 0.0 S irq/8-rtc0 74 FF 50 - 90 0.0 S irq/26-radeon 111 FF 50 - 90 0.0 S irq/1-i8042 128 FF 50 - 90 0.0 S irq/14-pata_ati 129 FF 50 - 90 0.0 S irq/15-pata_ati 135 FF 50 - 90 0.0 S irq/22-ahci[000 249 FF 50 - 90 0.0 S irq/7-parport0 970 FF 50 - 90 0.0 S irq/27-enp3s0 3 TS - 0 19 0.0 S ksoftirqd/0 17 TS - 0 19 0.0 S ksoftirqd/1 [rocketmouse@archlinux ~]$ pacman -Q ardour5 jack2 ardour5 5.5-1 jack2 1.9.10.r202.gf2ece24-1 [rocketmouse@archlinux ~]$ cat .jackdrc_rme_hdspe_aio /usr/bin/jackd -dalsa -dhw:HDSPMx579bcc -r44100 -p256 -n2 [rocketmouse@archlinux ~]$ cat .jackdrc_scarlett18i20 /usr/bin/jackd -dalsa -dhw:USB -r44100 -p256 -n2 1. [rocketmouse@archlinux ~]$ $(cat .jackdrc_rme_hdspe_aio) >/dev/null 2>&1 & qjackctl & ardour5 >/dev/null 2>&1 05-weather_with_you/audio_out 1 -------> playback_1 05-weather_with_you/audio_out 2 -------> playback_2 capture_1 -----------------------------> rme unbalanced/audio_in 1 capture_2 -----------------------------> rme unbalanced/audio_in 2 unbalanced outputs were connected with unbalanced inputs hdspmixer controls were set to 0.0 and -∞ qjackctl did show no xruns 2. [rocketmouse@archlinux ~]$ $(cat .jackdrc_scarlett18i20) >/dev/null 2>&1 & qjackctl & ardour5 >/dev/null 2>&1 05-weather_with_you/audio_out 1 -------> playback_5 05-weather_with_you/audio_out 2 -------> playback_6 capture_3 -----------------------------> focusrite balanced/audio_in 1 capture_4 -----------------------------> focusrite balanced/audio_in 2 balanced outputs were connected with balanced inputs btw. the first time I used the Focusrite balanced instead of unbalanced the input pots of the focusrite were set to 0 this isn't the optimal level, but the only way to visually ensure that left-right-balance is correct qjackctl did show 0(2) xruns Regards, Ralf