Question re paralleled tda1541a chip

Hello,

I’ve seen talk about paralling or stacked tda1541 chip for a dac but it was not clear to me if any other changes are needed.

Basically, i’ve built a Dac based on this chip using the board in the attached pic and using a tube output stage based on lampizator circuit using 6n2p tubes. I’m very happy with the sound especially for the type of music i listen to. I’d say it’s definitelly not a setup for all genre of music.

Coming across a second tda1541 chip, i’d like to try and stack them on top of each other with some sort of aluminum bar in between for heat dissipation. Have seen it done here by a few members but as stated before, it’s not clear if any other changes are needed to decoupling caps or any other dac pins. The power is plenty.

Do i simply just solder them on top of each other? I undersatnd that i have to halve the i/v resistor if i use 2 of them.

Thanks
 

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