Hello,
Building a pure valve (in the signal path at least - PSU is solid state) pre-amplifier/mixer and I am in two minds about whether to add a built in headphone out to it or not, for monitoring purposes. One option is to to take the signal from the "tape out" from each channel, mix it using resistors and feature an output with no further gain at the back, which will go into an external headphone amplifier.
Another option is to add the latter inside the mixer. Was thinking that I could use a simple 12-13V design and use the filaments PSU to power it.
The advantages of the latter option are obvious. What I was worried though is that adding more "stuff" to the heaters' power supply line could somehow affect sound quality. I am clearly ignorant about it so any views would be very much appreciated.
Before people suggest it, I am not interested in adding a tube-driven headphone amp to the mixer. Reason is simple - I never listen to music using headphones (unless I'm on the plane or in long train journey) and cannot justify the additional cost, time and space on my mixer this would involve.
Thanks,
Nikos
Building a pure valve (in the signal path at least - PSU is solid state) pre-amplifier/mixer and I am in two minds about whether to add a built in headphone out to it or not, for monitoring purposes. One option is to to take the signal from the "tape out" from each channel, mix it using resistors and feature an output with no further gain at the back, which will go into an external headphone amplifier.
Another option is to add the latter inside the mixer. Was thinking that I could use a simple 12-13V design and use the filaments PSU to power it.
The advantages of the latter option are obvious. What I was worried though is that adding more "stuff" to the heaters' power supply line could somehow affect sound quality. I am clearly ignorant about it so any views would be very much appreciated.
Before people suggest it, I am not interested in adding a tube-driven headphone amp to the mixer. Reason is simple - I never listen to music using headphones (unless I'm on the plane or in long train journey) and cannot justify the additional cost, time and space on my mixer this would involve.
Thanks,
Nikos
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