Comparison of these two fantastic amplifiers. The Marshall DSL1 Valve amp and the Laney Lionheart (or LION) battery-powered mini amp. Yes, I know it’s an unfair comparison of a £250 vs £60 guitar amp, but surprisingly the Laney has a few tricks up its sleeve that caught me off-guard! What do you think? Drop me…Marshall DSL1 & Laney Lionheart Mini. Valve Vs Mini guitar amp.