Uploaded March 2016 | Updated September 2026, 2 weeks ago
Edit: you can listen to the uncompressed audio track here: soundcloud.com/eric_b/factory-vs-upgraded-tubes-dynavox-vr-70e-ii-tube-amp-recordings-with-q-acoustics-3050-speakers
Recordings of a Dynavox VR-70E II tube amplifier with a pair of Q Acoustics 3050 speakers.
Comparing the recordings of the factory unbranded Chinese tubes with upgraded ones:
- power tubes: 2 matched pairs of Tung-Sol EL34B tubes
- pre amp and phase reverse: 2 Philips 6U8A tubes.
The recordings were done with a Zoom H2 recorder, the speakers and Zoom were triangular spaced, 1,8 mtr apart.
The 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 (thanks neighbor).
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.
-----
Music
All rights reserved to the owners of the sound tracks:
- Songs: 414 Soundtracks
1 Austin-Variation D
2 Cumbia-Variation D
3 Johnny Liked Jazz-Variation D
4 Wicked Sara-Variation D
6 Ninth Ward Festival-Variation D
7 Night Clubbing-Variation C
8 Yankadi Dreaming-Variation A
9 UK Seoul-Variation B
- Loops: Prime Loops - Prime Treatz & Beatz
5 Bpm140_Pump_Break_3_PL
10 Bpm139_Deep_Break_PL
Edit: you can listen to the uncompressed audio track here: soundcloud.com/eric_b/factory-vs-upgraded-tubes-dynavox-vr-70e-ii-tube-amp-recordings-with-q-acoustics-3050-speakers
Recordings of a Dynavox VR-70E II tube amplifier with a pair of Q Acoustics 3050 speakers.
Comparing the recordings of the factory unbranded Chinese tubes with upgraded ones:
- power tubes: 2 matched pairs of Tung-Sol EL34B tubes
- pre amp and phase reverse: 2 Philips 6U8A tubes.
The recordings were done with a Zoom H2 recorder, the speakers and Zoom were triangular spaced, 1,8 mtr apart.
The 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 (thanks neighbor).
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.
-----
Music
All rights reserved to the owners of the sound tracks:
- Songs: 414 Soundtracks
1 Austin-Variation D
2 Cumbia-Variation D
3 Johnny Liked Jazz-Variation D
4 Wicked Sara-Variation D
6 Ninth Ward Festival-Variation D
7 Night Clubbing-Variation C
8 Yankadi Dreaming-Variation A
9 UK Seoul-Variation B
- Loops: Prime Loops - Prime Treatz & Beatz
5 Bpm140_Pump_Break_3_PL
10 Bpm139_Deep_Break_PL
