Krell KSA 200s

Hi,

I have a krell ksa 200s currently connected to a balanced preamp Electrocompaniet EC 4.7.

I have recently acquired a Melos sha-1 tube preamp with unbalanced output only.

Could I just connect it to the unbalanced input of the preamp.

Also can I leave the balanced input connected to the second preamp or do I need to have it disconnected when using the unbalanced input.

Appreciate your help.

Thanks,

Kunal

kunalraiker06-11-2026 8:29pm

mofojo Details Discussions Posts This discussion Message User 2,410 posts 06-12-2026 at 12:37am Copy Comment URL Report Comment Edit Delete I do know there is supposed to be a jumper installed in the balanced inputs when you are using rca input. Whether you can leave both plugged in I’m not sure.
dokosan Details Discussions Posts This discussion Message User 94 posts 06-12-2026 at 12:50am Copy Comment URL Report Comment Edit Delete You have a very cool amplifier. Per an internet search of Krell manuals: 1) use only one input, RCA or XLR, at time, 2) if using RCA, shorting pins should be used in the XLRs if using RCA. It also indicates that XLR is the preferred connection method. Enjoy!
kunalraiker OP Details Discussions Posts This discussion Message User 61 posts 06-12-2026 at 02:51am Copy Comment URL Report Comment Edit Delete Should I just use an RCA to XLR cable and connect the preamp to the XLR input of the power amp?
yags1 Details Discussions Posts This discussion Message User 87 posts 06-12-2026 at 03:08pm Copy Comment URL Report Comment Edit Delete disconnect the xlr from the preamp you are not useing or you mic get circulating current from having both connections plugged into the amp and you don;t really need the jumper for the amp.