Home theater and 2 channel setup from same speakers?

I deleted my previous 3 posts. about using the Receiver’s inputs

My understanding is that , only a Receiver, with a HTB ( if there are such Receivers ) could be connected to a external preamp.

p.s. : an AVR is a Receiver ; wihich  is not the same as a Processor

The OP owns a Receiver

https://cdn.shopify.com/s/files/1/0562/5390/7003/products/TXRZ50_4_1300x.jpg?v=1643250423

@holmz

I thought , the OP wanted the Tube preamp to go THROUGH the Receiver.

Then , being able to use the same speakers he already owns.

If he uses the RCA outputs , to the preamp ; the OP will have to buy

a power amplifier. and a speaker , A/B switch for using the same spreakers.

I have an Acurus ACT4-20 Processor. I am less familiar  with Receivers.

In my knowledge, there is no Receivers with a HTB ( input)that allows to bypass

the preamp section of the Receiver; and then allows , only an external preamp;

and using that way ,only the amp section of the Receiver.

´´Find the AV receiver’s Home Theater (HT) Bypass or Direct In port ´´