One of my favorite things about TB is searching the archives; lots of great first-hand info from players out there. I wanted to add a couple of thoughts about 3 Peavey bass amps I've had significant experience with in case people come across them or want other perspectives.
Peavey MegaBass [ca. 1990]
This was my main bass amp when I played out full time between college and grad school. I remember getting funny looks from gear snobs about this head... until they heard it. I read somewhere here on TB that this unit was a favorite among people who worked at Peavey. I know that bass players loved it--guys would come and talk to me between sets to say what a sweet amp it was. The stats are all easily found online, so I won't go through them. I ran it bi-amped with two cabinets: a Mesa/Boogie 1X15 and a Hartke 2X10. It was easy to dial the crossover to get a great tone. Despite being rated at 200w, the thing was loud as all get out. It was the absolute perfect head for club gigs. I carried it in a 2-space rack bag (it was very heavy) and left one of cabs where the band practiced. The only negative thing about this guy was the XLR direct outputs. I always wanted sound guys to use them--and they tried--but they could never get what they wanted and I had to use a different DI box. Oh, and the chorus was a little "wet" for my taste, so I just used it dry. But honestly, when I was playing out in the early 90s I wouldn't have traded this head for anything else, and I got to play lots of cool (and more expensive) gear. The MegaBass was a fantastic head. Period.
Peavey Microbass [ca. 1996]
A pal gave me this thing for free several years ago. For what it is, you can't beat it. It's got to be the perfect "bedroom" practice amp. Headphone cuts out the signal to the speaker. The 20w amp into 4 ohms 10" speaker is nice and punchy for the low volume. Throw it in the corner and turn it up a bit, and it can almost sound like you are practicing through a much larger rig. Very simple and tonally transparent--just what you want in a practice box. Might cut it for playing with a piano player or acoustic guitarist, but better leave it in the bedroom, as it just can't make enough noise to play with other instruments. Still, that's not what it's for. I think they nailed this one, and I'm still surprised by the tone for such a cheap and small amp. I read somewhere on TB that some of these were made in China and don't perform as well. This one is Made in USA and really sounds quite fine for what it is. We'll never get rid of it.
Peavey Basic 50 [ca. 1985]
This is the oldest one I've owned, and I just got it recently. It came with a bass we bought and it's in mint condition. Still, this is my least favorite of the bunch. It has many of the characteristics that I didn't like about Peavey amps in the 80s before I got my MegaBass. For what it is, I suppose it's okay. It is basically a larger practice amp, but the size and greater wattage (50w) makes you wish it could do a bit more. The built-in clipping is smart, as I am sure the Peavey folks knew this would be the smallest amp that anyone might try to play in a band setting, where the amp will just not cut it. Even by itself, the sound is flat and the cabinet lacks a lot of bottom end. Honestly, at comparable volumes the Microbass sounds significantly better. That smaller amp is more defined, punchier, and believe it or not has more "boom" on the lower end. Still, this is an amp that my son will be able to leave at the "band house" if he starts playing in a band.
Well, I wanted to add those experiences to the "collective thoughts" here on TB. Ever since my very positive experience with the MegaBass, I've always thought Peavey makes great stuff. If I were to play out again, I might try to find an old MegaBass. I sold mine several years ago, and it sold right away on eBay--guys know about these amps and still want them.
--Steve