Amplifier Unison S 6

With the right speakers is S 6 (3200 euro) a dream unison, because he with voluptuous colors paint tubes-typical as well as powerful rock.

  1. Amplifier unison S 6
  2. Data sheet

Two hundred seventy-eight Watts: This quite impressive number does not indicate unfortunately the output power of the S 6 as one might think, but the performance that consumes the unison operating. For spenders and EU-energy efficiency-spring readers he is nothing at all so ever – its output swings to 2 x 30 watt.

The question, what has for a fascination with such a tube amp, and why there still are people that unison shell out 3200 euro for the S 6 from deepest conviction arises. Outside is actually just the pretty Baroque-looking appearance with real wooden cheeks – a weak argument. It can be so ultimately only the sound quality.

This is also Giovanni Sacchetti clear why he like files on its integrated amplifiers, to give them a separate sound direction. Therefore resembles the S 6 only to the part of the Sinfonia (test 2/06, 4000 euro). In part, because it has also the S 6 in unison manufactured transformers, with the details of the developer geheimhält: because it rightly attaches to the transformers sound important, he remains tight-lipped when requesting. He has tell us only that the Trafobleche be cut very slowly, which they were very flat and there is so little air between the layers of iron.

Single-ended S 6 is switched, and the tubes work in the class-A mode (see post “Know-how”). Three EL-34 inners are installed in contrast to the Sinfonia and not two KT 88. In doing so, more than its more expensive brother makes even a few Watt the S 6.

But he has a DC tube heater, 6 with AC stuck takes the S. What but not so problematic is how the very good noise shows. Because 6 is worth only subtly more hum of S and one only 1 decibel lower noise as the Sinfonia to. Regulated voltage was dropped at the S 6, but not the lush screening by the capacitors (bright red), the Itelcond West of Milan for unison manufactures, and the choke coil, which can deliver delayed after the capacitors power.

At the driver level, a double triode ECC 82 by Electro Harmonix from Russia and not like the Sinfonia each an ECC 82, as well as an ECC 83 has the S 6 for the gain and phase reversal per channel.

Before it went into the hearing room but to the actual comparison of the brothers, the testers tried on what Transformer tapping it sounded better with the Magico v3 (6/08). While preferring them keeping the 8-coils of ohm because although the bass compared to the 4 ohm connections was minimal fuzzy, but for both subjects were hugging and though performed.

Now also showed that 6 despite some other temper with the Sinfonia could catch up the S. Because he had similarly opulent and rich sound colours such as the Sinfonia, but heartier grabbed too. So, 6 bass drums gave the S rich descended during the Sinfonia, such as Trentemoller ‘Physical fraction’ (‘the Trentemoller Chronicles”, AMCD02) deeper into the bass cellar.

Even when the spatial representation there to report differences, because Sinfonia deeper and the instruments minimally more focused the recording room something, while the musician while a inaccurately outlined the S 6, but took it further forward and appear larger let, which direct the sound.

So we bestowed on him the title of “Rockers”, since it such as red hot chili peppers’ “Mellowship Slinky In B Major” (“Blood Sugar Sex Magik”) the snare so pretty explosive popping and powerful cluck the bass had, while in the Sinfonia although the height minimum fine, but the peppers were significantly tamed.

The comparison with the T + A PA was 1260 R as somewhat differently. Because this could at the V 3 more flexing its muscles can and completely clean up at high levels in the bass. For this he appeared somewhat less dedicated and minimal dull.

As then, a loudspeaker with better efficiency as about the Cerwin Vega CLS 215 (7/09) has been connected, there was no stopping: the strain of large stereoplay listening room and the Magico had prepared the S 6, vanished completely. Now you could indulge in the sumptuous timbres and expressive musicality not only in high volume, but also in ear damaging levels. Overall, the highlight predicate was finally due.
+ Strengths: Wonderful, strong color sound picture and vivid, rousing musicality
– Weaknesses: High power consumption in operation
With the right speakers is S 6 a dream unison, because he with voluptuous colors paint tubes-typical as well as powerful rock. He served at the same time even the smallest nuances such as on a silver platter, and weaves a fine treble dreams, makes him a real all-rounder.
Unison S 6

Manufacturer Unison
Price €3200.00
Rating 56.0 points
Test procedure 1.0

Technical data and test results

Dimensions (W x H x D) 33.0 x 20, 0 x 15.0 cm
Weight 25.0 kg
Genus (REC / GM) Integrated amplifier
Remote control available
System remote control / Adaptive /
Front panel Black / Silver / champagne / /
Front panel other FB.
Tone controls / switched off /
Monitor switch
Recording selector switch audio
Network jacks switched / unswitched 0 / 0
Memory / storage automatic
Sendersp. with aut. Sorting
Input phono MM / MC /
High level RCA inputs / XLR 4 /.
Digital inputs RCA / XLR
Boxes outputs A + B / switchable /
Headphone Jack
Pre-Out / main 1 /.
Recorder connections (a / from) 1
Processor input / output /
Unity gain input
Pre-Out subwoofer 0
Measured values
True sine wave power stereo 4 ohm / 8 ohm 24.0 W / 28.0 W
Music performance stereo 4 ohm / 8 ohm 37.0 W / 28.0 W
Noise line 97.0 dB(A)
Short conclusion stereoplays new highlight unison S 6 like with enough leis-tung – also for less sensitive speakers – and with direct, idividual strength musicality.
Sound Absolute top class
Sound points analog
(maximum 70 points)
Sound points Netzwerk-In
(maximum 70 points)
Sound points USB-In
(maximum 70 points)
Measured values
(maximum 10 points)
(max. 15 points)
(maximum 10 points)
Overall rating (maximum 120 good – very good-77 points
Price-performance ratio outstanding
tested in issue: 10 / 09