#1
I have a Yamaha KS50 (not sure If it's considered an amp or a cab) which seems to work as a combo amp. It's connected to the the power socket and can amplify and produce the direct sound from my guitar by itself.
I want to buy the Egnator Tweaker 15W tube head, and was wondering if the Yamaha KS50 could work as it's cab without breaking it(the cab) or something.

http://www.egnateramps.com/EgnaterProducts/Tweaker/TweakerHead/TweakerHead.html

http://en.m.audiofanzine.com/other-pa-live-sound-speaker-cabinets/yamaha/ks100/medias/pictures/a.play,m.358431.html
"Yeees I am your god!" John Petrucci, Phsyco excercises
#2
I'm unable to find any decent images online, but I did find out that it's a 50 - watt 4 - channel keyboard amp. Unless it specifically has matching ohm inputs on the back, it can't do guitar from an external amp. You're able to get direct sound because it's practically a P.A.
The above post is in terms of 'YMMV' and 'IMO', etc...

Quote by Offworld92
This debate is exhausting to read.
The guitar world is drowned in fairy dust.
We need to start at the very beginning. What is tone.
#3
Yeah, sadly it seems to be some obscure, secret model...
"Yeees I am your god!" John Petrucci, Phsyco excercises
#5
Buy a Line 6 HD500, plug it into the Yamaha, quit worrying.
“Ignorance more frequently begets confidence than does knowledge.”
Charles Darwin