http://www.ashdownmusic.co.uk/press//press_images/bass/EB15180.jpg
I got this bass amp around the same time as I got my Ibanez bass, and I have to say it was a very good choice. It's a really solidly made combo with 180 watts of power driving a 15" speaker. It's also got the little ashdown "speedometer" input level meter, in the form of five LEDs going from green through to red.
The amp only cost about £290 (about $460 I think) and from the power and features you get it's a great choice.
The EB-180 has two inputs, "high" and "low", designed for use with passive or active instrument pickups. There are adjustable input and output levels and a fantastic five-band EQ with which you can adjust your tone to your content. There is also a button to turn the EQ on or off and a "deep" button and a "bright" button to add instant bass or treble boost to your sound.
One of the niftiest features of the amp is the "sub-harmonics" control - when switched on it plays both the note you play and the same note an octave down. This can really thicken out your sound if you're playing on the higher strings - although on the lower strings (especially if you play five-string) it's less useful. The effect becomes more noticeable if you dial in more bass EQ, and there's a level controller the sub-harmonics so you can subtly blend them into your sound.
The amp has an effects send/return loop, a line-out on the front that can also be used to plug in a tuner for on-stage use, and a Post-EQ DI (XLR Mic lead) out that allows you to plug straight into a mixing desk. I've found this ideal for recording the bass.
Overall this is a great combo I'd reccommend to anyone who wants a powerful bass amp that's packed with features.