Created by sound purists For those who only make up with the absolutely better, the Single power stage Reference 330M supposes the most recent design effort of the legendary US company Audio Research in amplification without obligation: a 100% electronics to valves That not only redefines musical reproduction, but does it in the form of an incredibly beautiful product. Thus, it shares the same dimensions as the reputed reference 160s, incorporating two ultrasilencious fansvery shallow and selectable speed on its lower plate. Regarding the connectivityexhibit one Great flexibilitywith balanced and non -balanced inputs, output for 4 and 8 ohm acoustic box, independent audio grounding, input and output for 12 V shooting signal, RS232 control port, operating counter of the valves and Deactivable automatic off function.
Reference 330m follows the distinguished visual philosophy of the new generations of the Minneapolis firm (Minnesota), including the spectacular front level indicators Ghostmeters that float in front of the six KT170 output valves. Extruded panels and a fundamental part of the built chassis totally in aluminum They provide the set rigidity and beauty in equal parts. In terms of engineering, the first aspect to highlight of this Electronics “Out of parameters” With departure of 330 continuous watts over 4/8 ohms is that it uses a completely balanced differential circital topology of new invoice, which combines the topologies of amplifiers mythical reference of the past, such as the valve regulation of vacuum at the power supply, with highly innovative improvements in the circuits.
In line with the “ethos” of Audio Research, the audio circuitry of the reference 330M is entirely to valvesfrom ECC83 and 6h30 of the input section, to 6h30 and 6550 of the power supply and the new KT170 of the output stage, which, excited by last generation JFET transistors based on Silicon carbide (Sic) have made it possible to increase the margin of plate voltage, the maximum cathodic current and the plate dissipation. In a correctly implemented configuration, the KT170 provides some Sound benefits not only superior but simply unmatched. Manufactured completely by hand In the facilities that the American firm possesses in Maple Grove, Minnesot rich harmonics and complete dynamic contrastsfrom the smallest whisper to the largest of the crescendos, with the original acoustic space atmosphere. Expressed with other words, a unique mixture of resolution, tonal balance and microinformation wealth.
