Used VOX T-25 Bass amp is a great practice combo amplifier.
The T-25 “practice” combo amp has one 10″ bass speaker and one tweeter horn in a closed back, medium density fiber board enclosure. The twenty five watt solid state power amp featured a volume control and four tone controls and dual input jacks. One input was for a bass with passive pickups, and a second, less sensitive input was for basses with active pickups. A push button “Bassilator” switch boosted low frequency response. A head phone jack allows for quiet practice with the speaker muted.
The T-25 is not suitable for live performance levels.