AVM PA 8 and SA 8 in the Test

AVM offers highly inspired State-of-the-art technology such as the muses module with a new pre and power amp. However, this technique is like hiding behind the wonderful sound.

AVM PA 8 and SA 8 Rejoice new AVM products: The high Ender already knows the power amplifier SA 8. Except that the test in stereoplay a 42 kilo heavier colossus served a single speaker. Now, AVM split up the two amplifiers connected in bridge each Mono block and provided them with own inputs and outputs – which reduces the power cost of 19,000 on 9900 euro and must not even terribly harm the sound. But no matter whether the music lover decides Twin Pack or the single giant power station for the: With the PA 8 from 6490 euro experienced Baden manufacturer offers now also a suitable precursor. And one in the fall at the first meeting.

What a little clunky looks in the photo, proving – understandable close – turned on the finest and Locked chest. After switching on, you will be greeted on the TFT display with a nice graphic. At the metal buttons AVM has accurately brought flywheel mass and ball bearing under a hat. The operator may like to firmly take the large screwdriver in hand or only push – whereupon the volume indicator in 0.5 dB steps up or down steps and the PA 8 celebrates a melodic relay Zirpeln. At all enthusiasm so far – a teachable moment is only when looking at the back. Less due to the bloody expensive WBT NextGen jacks, which here Flash. But rather because the PA 8 offers a professional rack system, a wide range of expandability and thus absolute security for the future. AVM thinks about a DVB card for satellite and network connections. The stereoplay test device, however, is still in relative modesty: cinch and XLR in are available, a cinch, “Tubes” – RCA and one XLR module cheer on the outputs. In this base price version (+ 1990 euros for the tube insertion), curious music signal fly on the wall but already slipping into joyfully via next-gen or Neutrik XLR. Except a series of double contact relay (which the mass on and disconnect) and a few ICs find them here not much before. After all, the only Symmetrical and chunks buffer ICs called Burr Brown OPA 627 and 134. This noble building blocks leave the signals in terms of form and deflection 1:1, give them a habhaftes power snack bread. That is really unnecessary, because to glide over to a ‘bus’ via gold contact, easily manage. The subsequent short trip on the wide symmetrical lines of the plug-in connection system also not eating away at the forces of the signals. The tubes output module (particularly valued by stereoplay) an ECC 83 dual triode takes the signals in reception – not as usual with the control grids, but with the bottom cathode. Although a bit more signal flow through the relatively low-impedance cathode resistors in the following way. On the other hand are the grid to ground and shielding the cathodes of the anodes – reduces what delayed, particularly sound dangerous repercussions. Then, the PA 8 – steps by the ECC 83 triode systems passing the double signal on a volume control ICS – from voluntary to mandatory. AVM uses the module muses 72320 by the Japanese specialist JRC. This operates with higher dynamic range than others; on the one hand, he rushes little, on the other he digested tips with up to 12 volts. Also the glitters muses with a high end feature: a “lead-frame”, a connection frame, which consists of thick, high-purity copper. Now follows only a stage, which again summarizes the symmetric pages and cleans from common mode interferences. Then, the signal path on powerful transistors facing a 60-Watt power supply page leads already to the precursor.

The power amplifier SA 8 AVM – usually the case, the path leads to the power amplifier SA 8 which differs not great up to the driver steps from other ambitious amplifiers. Based on a separate power adapter core transformers with juicy electricity storage capacitors, because even 60 Watt would come out. Instead of the box terminals 24 more field effect transistors (IRF 640 and IRF 9640) follow but at the AVM per channel. The pulse fast semiconductor need not much driver performance – in principle or just the input capacitance can be unloaded the fixer in time with the music. Otherwise is the Pack trimmed on speed – which by the emitter resistors, so on local feedback, itself controlled – easy shorting away. And like several seconds that long without reddening – up the protection circuit then but saving the two power amplifiers – kilowatt transformer for left and right and the 40 Memory cos orders. The AVM gala performance In the listening room, the AVM Kaventsmann – who plays also the power saver in “eco” mode – hit the ground the barrel. As the Mono blocks, also he demonstrated what is possible with tall Hi-Fi. Egg, egg, already very nice, so a piano run, the SA indicated 8; then he pushed not only a few strings and hammers, but a veritable concert grand piano in the listening room. And a space in the room, which is not only idea and hope, but vertebrate walls and fresh gebohnertem parquet. Even with the price moderate work boxes, Sonics Allegra, all agreed. Everything! Even if some other high end idea burst – ad libitum absolutely double-basses, cellos, without extending their timbre world and a viola and violin rejoicing, only as stallions, rising from colorful splendour and airiness to the sky. Even MX-R Ayre reference blocks were ultimately only with a stick to claim more treble joy against the AVM-gala performance. Relieved she wiped the sweat from the brow of the ALU, are only as the next task was: the examination of AVM precursor. Also there was a lot of work, because the PA 8 was going to accept no limits – no constriction, no smoke, no hiss, no nothing. Felt to be a singer like Ulita Knaus or Vienna Teng with body and soul to the handset, the AVM as a matter of course. What was then but a miracle: donated not just size and tension about a wooden bass, but gave him a very intense and real performance, punchy gripping power. The ultimate goal of the PA 8: along with a lucky chain a fantastic time machine to make one which can – get the music played once in person back to life with all its facets, with fixed pulse, breathing and precise Kraft.Gut, the more expensive reference preamplifier Thorens TEP 3800 operates a little impulsive. Yet that was the unanimous conclusion: the AVM we want to miss for God’s sake no longer.

 

Gallery

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