I've heard the term "hybrid" amp around the forums and I was wondering.

What's a hybrid amp?
Bass Gear:

Mensinger: Speesy
Fender Precision 1989 (CIJ Rosewood)
Fender Steve Harris (CIJ)
Lakland J Sonic 5
Epiphone Explorer
Maruszczyk (custom) Jake

Ashdown CTM 100
it's part solid state part tube....
technically the definition is a snake pit.
Prs se Holcomb is the answer
Out of both the pre amp and power amp, one is solid state, the other valve.
Strictly speaking if it combines valves and transistors then it is a hybrid. That makes a HT-5 and a JCM900 a hybrid. However, as long as most people see both sizes of valve when they look in the back they call it a valve amp (or a tube amp if you are American). It's only when they see only power valves OR preamp valves but not both that they call it a hybrid. It's another term taken by guitarists and twisted beyond recognition (like gain).
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band