Portable amp for guitar and Headphones?

[bobeau]

Quote:

Originally Posted by kramer5150 My fave low wattage tube amp is a Lexicon signature 84.... Its like 12 watts of tube/analog circuitry... single EL84 I believe. Overdrives my mesa 2x12 nicely... and is shoockingly loud when pushed. I think they go for ~$300 used on ebay.

Not to go too far off the subject, but man, 12 watts is _a lot_. Remember that everything else equal, you have to increase wattage by a factor of 10 to double SPL. Even my 3 watt Allen Amp with an 8" speaker, with any amount of overdrive, is far too loud to use in an apartment situation. I'd love to try a ZVex... don't think it has a headphone out though. K1000s?

Also most guitar amps are mono...

 

[YngwieJMalmsteen]

Guitar pickups are very low powered, they need to go through some sort of gain stage that no headphone amp on the market has. So get a guitar amp with a line out (preferably a speaker-emulated line out), a DI box, or a cab simulator as kramer suggested, and run that into your headphone amp.

I think you will find that the large majority of pro guitarists use all tube amps, and I don't know of any that have a line out...

 

[rickcr42]

A DI Box is "anti" gain so not suitable at all !

They are meant to take a line level signal and attenuate it down to mic input levels.

Quote:

I think you will find that the large majority of pro guitarists use all tube amps, and I don't know of any that have a line out...

many many do and it is called a "direct out" and is a break point between the preamp and power stages

to use a regular headphone amp with a guitar all you need is a simple X10 gain stage with a high input impedance so as not to load down the guitar pickup and an input level control with the overall volume control between it and the headphone amp.This allows for setting both gain and volume independantly just like in a regular guitar amp.Series connected CMOY amps (with a 1meg ohm input on the first) will fit the bill as would a simple single FET stage added to the headphone amp but remember the headphone amp is a stereo device and a guitar is a mono device so hook up accordingly ("Y" adapter or mono switch) or you will only get sound in one ear

 

[JackTheRipper]

So if I get a Cmoy amp and a single FET thing I'll be able to play guitar with my heqadphone amp?

 

[rickcr42]

Yes.You really need to not load down a guitar pickup and the input inpedance of a hi fi headphone amp is just not high enough so something like this with a "Y" adapter will work fine

http://www.till.com/articles/PreampCable/index.html

 

[JackTheRipper]

Thannks a lot

I'll be orderimg my PA2V2 soon

Also I already have a ****** guitar cable so I can MOD it