Originally Posted by GMT
In your opening post you say that you are looking to control the HD621 with RS232. Do you mean configure?
Yes, I do mean configure.

John
Main: G61R SL, HD621, DSP5200 SE L&R, DSP3300 C, DSP3200 Surr, Roon, MS200 & 218, Oppo BDP-103, Humax HDR, vMSR running on iPad mini 6 (iOS 26.3)
Second: M6 mono, 210, Distributor 1, Project TT, MS200 (for IR)
Third: F80