Amp with no trim pots for DC offset

[qguy2000]

Do amps with no trim pots for DC offset offer any advantage vs amp with trim pots? Is adding a trim pot easily done with no side effects?

 

[johnmath]

Whether there is an advantage depends on whether the amplifier design needs trimpots to set the DC offset, or whether it is not sensitive to offset drift because of innate design, for example if it has a servo to correct offset. Rather than add an offset trim to an existing amplifier, better to ask why is the offset is out of specification? There must be a fault or out of tolerance component in the circuit.

 

[MarcelvdG]

Regarding the first question, they are slightly more reliable and easier to mass produce.

 

[katiyar]

You can refer to Mr Elvee's designed "Circlophone" with auto Bias. No adjustments and excellent performance.