I've enjoyed playing through (affordable) solid states that have a warm sound. Like an Acoustic 150. I came across a great deal (375$) on an Eden Time Traveler WT 405 and picked it up. I like the amp, but it takes a few minutes to warm up before it reaches the normal volume. Solid state amps, and this amp in particular shouldn't need to warm up right? I have a couple more weeks to return it... any thoughts?