DynaVox VR 20 Tube Integrated Amplifier

DynaVox offers the probably cheapest tube amplifier of the Galaxy with the VR 20 for 400 euros. Can he reproduce music actually audiophile?

  1. DynaVox VR 20 tube integrated amplifier
  2. Data sheet

While some companies seek their fortunes in more and more effort and higher prices, DynaVox marched the other way around. Put the VR 70 S for 500 euros (stereoplay 4/05) under the tube amps actually already a veiling record, is there with the VR 20 now no less than a diet version.

Car difference: instead of using the El34 output valves which get about 4 kilos lighter amp with two counter clock pairs of type 6P6P, the tubes freak recognizes as the Eastern counterpart of the American 6V6. This pentode with her in order to better heat dissipation was developed in 1937 blackened glass bulb because 6 for the Assembly of ordinary radios appeared too strong the 6 L. In fact, a double of supplies not 20 or even 30, but only relatively damp 10 Watts into 4 Ohms.

The power transformer of Board of Directors led the designation PT_300 70 E now is PT 120, suggesting a more limited power sales. Also the output transformer were correspondingly more compact. You bring to be 4 – and 8-ohm taps, of which the owner can find the better sounding to taste on its boxes.

Inputs no cuts were possible – because already the VR brought only one 70 E. As the pathway around then leads to a tiny volume potentiometer – with some air so, so that tube hobbyists reflexively think of Alps replacement.

In the small DynaVox radio-end tubes work

The VR_20 is similar to his older brother on the hair up on the performance limitations. Again, a double tube called 6F2 (German designation ECF 82) receives the signal comers.

The 6P6P-Endröhren provided in the push-pull effort – one so far more for the deflection upwards and the other more on the strokes down – as they can. The output transformer summarizes the income of troubles so that last back nicely balanced music vibrations.

As a precaution, a feedback loop from the output traces to the pentode system of the preamp tube, so that the amplifier in case of deviations – he then makes a correction voltage on the comparison with the input signal – again can iron out the bugs.

Hopefully that DynaVox found the best compromise at the level of this scheme (a too much leads to unduly high share of hard distortion). The same applies to the setting of the end tubes quiescent current. If a new adjustment is necessary after changing the tubes, the screw trimming potentiometers can be and reach through holes in the chassis through points.

During the initial operation of the initially to varnish smelling DynaVox is first to keep the hand on the level control. 10: 00, 11: 00, the VR 20 struggled slowly to More constructive volumes high. What then – later – even not long hours at 13 o’clock position of the potentiometer to the powerful bass of normal boxing ranges. To a Smoochy beautiful growling insinuation.

Nevertheless, the VR 20 with Vienna Teng CD “Home territory” earned greatest respect. Fantastic, like the small amplifier the pots-and Cabana percussion-fired and sided with 3-D point accuracy. The ravishing alive sweet voice just so enchanted the listeners. Also gladly accepted the tubes-Benjamin of the still sparkling fine shape (not too pointed) piano runs.

In some areas takes on the VR 20 with some larger tube amp and also with the more powerful bass VR 70. Who already owns latter, may buy so to speak like the VR 20 as a sensitive tender for the second plant – before he spends maybe even exactly so much time!

DynaVox VR 20

Manufacturer DynaVox
Price €400.00
Rating 39.0 points
Test procedure 1.0

Technical data and test results

General
Dimensions (W x H x D) 30.5 x 18, 0 x 25.0 cm
Weight 9.2 kg
Features
Genus (REC / GM) Integrated amplifier
Remote control available
System remote control / Adaptive /
Front panel Black / Silver / champagne / /
Front panel other FB.
Muting
Tone controls / switched off /
Loudness
Monitor switch
Recording selector switch audio
Network jacks switched / unswitched 0 / 0
Memory / storage automatic 0 /.
Sendersp. with aut. Sorting No
Connections
Input phono MM / MC /
High level RCA inputs / XLR 1 / 0
Digital inputs RCA / XLR 0 / 0
Boxes outputs A + B / switchable /
Headphone Jack
Pre-Out / main 0 /.
Recorder connections (a / from) 0
Processor input / output /
Unity gain input
Pre-Out subwoofer 0
Measured values
True sine wave power stereo 4 ohm / 8 ohm 10.0 W / 8.0 W
Music performance stereo 4 ohm / 8 ohm 8.0 W / 6.0 W
Noise line 97.0 dB(A)
Review
Short conclusion The cheapest tube amp the stereoplay ever knows, although lacks but performance not on musicality. On efficiency of strong box he develops a soft, fine, and very natural especially when votes sounds.
Sound Upper middle class
Sound points analog
(maximum 70 points)
39
Sound points Netzwerk-In
(maximum 70 points)
0
Sound points USB-In
(maximum 70 points)
0
Measured values
(maximum 10 points)
5
Practice
(max. 15 points)
1
Valency
(maximum 10 points)
7
Overall rating (maximum 120 five -52 points
Price-performance ratio Very good
tested in issue: 6 / 10