This thing is INCREDIBLE! If you're looking for a 5 watt guitar combo that produces a classic rock 'n roll tone, you might want to check out Honeyboy Amps. Here's what they say about the 5w:
We’re starting with a 5 watt, Class-A amp, based on the classic Fender Tweed Princeton circuit, with simple volume and tone controls, a line-out socket added for connection to a PA system or secondary amp, and a character switch for versatile tone options. If you haven’t tried one, you might be surprised how loud you can play through a 5w amp with a beefed-up transformer and a 10” speaker.
This circuit and tube combination is renowned for its rich warm tone.
The amp retains the mid-range frequencies that are often ‘scooped’ out in later eras. Play the Class-A Guitar amp up to a volume of 4 or 5 and you’ll get a beautiful warm rich clean tone. Push up beyond 6 and you’ll get that classic tweed break up and crunch. These amps sound best when allowed to breath, so open up, dig in and hear the bite.
See more here: http://www.honeyboyamps.com/models-options/