# HDMI Switch for I2S signals between DAC and Network streamer or CD-player ? **URL:** \ **Category:** Audio Components\ **Created:** [January 26, 2025, 7:34pm UTC](https://forum.psaudio.com/t/hdmi-switch-for-i2s-signals-between-dac-and-network-streamer-or-cd-player/40755 "2025-01-26T19:34:08Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![nuuk25](https://avatars.discourse-cdn.com/v4/letter/n/2bfe46/32.png) [@nuuk25](https://forum.psaudio.com/u/nuuk25)\ **Post date:** [January 26, 2025, 7:34pm UTC](https://forum.psaudio.com/t/hdmi-switch-for-i2s-signals-between-dac-and-network-streamer-or-cd-player/40755/1 "2025-01-26T19:34:08Z")
Hello, I have a network player: SMSL SD-9 with I2S HDMI outlet and a Topping DAC: D90SE with I2S HDMI inlet. I can playback DSF files nicely from a Harddisk in a HDD Docking station. I plan to buy a CD player: Shanling ET3, with I2S out, so… I am one I2S inlet short on the DAC. I need a switch box with HDMI inlets and outlets that can do the job. Does any of you know about such a HDMI switch box ? I take it that all 19 wires/pins in the HDMI box must me connected evenly through out the switch. There are lots of HDMI switch boxes for Video/audio on the market, but the two (one without external PSU and one with) I have tried so far do not work in this I2S context !! ---
**Author:** ![rajugsw](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/rajugsw/32/16086_2.png) [@rajugsw](https://forum.psaudio.com/u/rajugsw)\ **Post date:** [January 28, 2025, 6:24am UTC](https://forum.psaudio.com/t/hdmi-switch-for-i2s-signals-between-dac-and-network-streamer-or-cd-player/40755/2 "2025-01-28T06:24:00Z")
I bought hdmi switcher cause I needed a 3rd I2S HDMI input. I didn’t work. The OS Audio protocol is completely different from HDMI 2.1 (not sure what version but it’s past 20 years now). To answer your question. Nope won’t work.