Swapping Ashdown CTM-15 valves with 70's Mullards significantly improves sound, potentially exceeding that of the Little Bastard.

Changing the first gain stage tube can significantly impact tone. Tung-Sol and Mullard tubes are recommended for reliability and sound quality.

The CTM-15's gain control enables it to play louder than the 30-watt Little Bastard, despite its lower wattage.

The CTM-15 is noted for its clean tube sound, offering a unique tone that's rich at low volumes, unlike many solid-state alternatives which can sound "mushy" at low levels.

The CTM-15 cannot run without a load attached, a feature available on the Ampeg PF-50T, adding a level of convenience for users with diverse practice needs.

The CTM-15's valve springs can rattle loudly at high volumes, causing annoyance for some users.

The Little Bastard offers extra features like a D.I. and effects loop, making it more versatile for gigging, especially with a PA system.

The Ashdown CTM-15, despite its appeal, lacks the versatility of modern solid-state amps like the Ampeg Rocket series, which offer tube simulation and weigh significantly less.

The Ampeg V-4B, offering 100W of all-tube power, is considered by some as a better choice for those needing more power than the CTM-15, especially in live settings.

Both amps are suitable for jazz duo/trio settings but struggle to compete with loud guitars in a grunge band context.

The Ashdown CTM-15 is praised for its warm, saturated sound at practice volumes, but it lacks the headroom needed for gigging, making it ideal for solo practice.

Users interested in silent practice can pair the CTM-15 with a load box like Two Notes Captor for silent operation, expanding its functionality in home settings.