I need to add a phono o/p to fm tuner

[thyristor44]

Hello
I have a denon tu-260l fm tuner feeding my quad34 preamp and 401/2 amp. Problem is there is no headphone output on the fm tuner so I would like to add a headphone output jack and some internal headphone amp, probably ebay diy.
I realy need advice on loading the audio output to the quad, would this effect the audio quality.
I also could do with a schematic for the denon tu-260l.
Has anyone any ideas on this mod.
Thanks
thyristor44

 

[lcsaszar]

Ideal place for hp out would be the preamp.

 

[ticknpop]

The Denon's power supply would suit just a simple op amp headphone amp.

Any headphone amp with a high current output stage will draw too much current, it woould overload and burn out the Dennon's transformer.

 

[DF96]

I realy need advice on loading the audio output to the quad, would this effect the audio quality.

Do you mean that you need advice on avoiding loading the audio output of the tuner?

I would take an output from the preamp. That will have been designed to drive things.

 

[Mooly]

The Denon uses a simple emitter follower output stage of modest drive ability and so you need to be careful what you hang on there.

Two easy choices.

1/ DIY using an opamp.

2/ Something like the TDA2822M chip (loads on ebay) which is perfect for headphone use if you pad the output down with a couple of resistors. Single rail, low current draw, high input impedance.

What's not to like 🙂