DESCRIPTION:
Edit: you can listen to the uncompressed audio track here: https://soundcloud.com/eric_b/tube-amplifier-vs-solid-state-dynavox-vr-70e-ii-vs-yamaha-receiver-with-q-acoustics-3020-speakers

Edit: here is a video comparing the factory tubes with upgraded ones: https://www.youtube.com/watch?v=lj57JBVp2xs

Recordings of a Dynavox VR-70E II tube amplifier with a pair of Q Acoustics 3020 speakers.
Comparing the recordings with a solid state amp, a Yamaha RX-V563 receiver.

The recordings were done with a Zoom H2 recorder, the speakers and Zoom were triangular spaced, 1 mtr apart.
The source music WAV file was played using a Logitech Squeezebox duet.
The Zoom recorder was set at a height at the middle of the speakers. Please use some good headphones or monitor speakers to listen.

Because of the room acoustics, the recordings sound more lively than the original tracks and there is also some environmental noise.
Obviously, the recordings give an impression of the sound, as far as any of these type of recordings can do justice to the real sound.
If you use poor monitoring to listen, the sound will be poor.

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Music:
intro "Voice Over Under" #1 "Who Likes to Party" #2 "Five Armies" #3 "Protofunk" #4 "Simple Duet" #5 "Organic Grunge" #6 "Zanzibar"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/