I purchased a Yamaha THR 10 a while back and highly recommend it for situations where volume is an issue. This amp is around 10 watts, has 5 separate levels of amplification from clean to modern hi-gain, has a control for effects (chorus, flanger, phaser, tremolo), and a control for delay/reverb. It has a headphone jack also. One can program up to five separate sounds and store them in user memory. It has a stereo simulated sound and is quite small so one can set it on a coffee table. It's ideal for setting in with acoustic guitars as its loud enough to bring an electric guitar out front without blowing everyone away. Best of all its inexpensive. Around 200 to 300 as I recall.