01. December 2021 · Comments Off on Karan Acoustics Master Collection POWERa Amplifiers · Categories: Hifi News · Tags: , , , , , ,

KARAN ACOUSTICS MASTER COLLECTION POWERA AMPLIFIERS LAUNCHED

Serbian High End HiFi brand, Karan Acoustics, launch their Master Collection POWERa Amplifiers.

Following last year’s launch of the Karan Acoustics LINEa and LINEb preamplifiers last year, the brand has added the Karan Acoustics Master Collection POWERa Amplifiers.

Karan Acoustics Master Collection POWERa Amplifiers

Karan Acoustics Master Collection POWERa Mono Amplifiers

The Karan Acoustic Master Collection POWERa mono and stereo power amplifiers complement their existing LINEa and LINEb line preamplifiers.

KARAN ACOUSTICS MASTER COLLECTION POWERA

The Karan Acoustics Master Collection POWERa amplifiers are available as 2100W (8 Ohm) mono designs or a dual-mono stereo amplifier chassis delivering 2x650W (8 Ohm) of power into any loudspeaker.

As with the rest of the Karan Acoustic Master Collection, POWERa amplifiers use high quality passive and active components (resistors, capacitors, bipolar output devices, internal wiring, connectors), as well as large, but mechanically and otherwise ultra-quiet toroidal transformers. Greater energy reservoirs within the power supplies have been implemented accordingly.

NEW CHASSIS

Milan Karan has introduced a number of new, innovative solutions into the circuit topology of his long-standing products. In the new Karan Acoustics Master Collection POWERa amplifiers, there is a completely new approach to design and execution of the main chassis, and, for the very first time in any Karan Acoustics product, the presence of a proprietary, in house designed, built in Line (mains) Conditioner.

Karan Acoustics Master Collection POWERa Amplifiers

The Karan Acoustics Master Collection POWERa Amplifiers with top removed

The new chassis concept is effective in its ultimate simplicity. Milan Karan told us: “What would be the best way of minimising or, even better, eliminating mechanical resonances of various components inside the chassis, as well as the chassis (amplifier) itself when in situ and under operating conditions? Increasing the mass is the most obvious solution towards superior overall damping, but, even more importantly, the choice of the correct type of material which would, with all added mass, behave correctly. Meaning, not resonate at all (less likely) or resonate at one or more frequencies that would not interfere with the harmonic structure of the music itself (more likely possible)”.

The new chassis has increased density and thickness of front and rear panels as well as the top cover. A solid CNC-machined piece of special aluminium as a single piece unibody heatsink for the output devices, is something that contributes more than anything else toward the non-resonant and quiet behaviour of the new chassis in both new power amplifier models. Gone for good are the sharp heatsink fins in favour of purposeful elegance in the design.

KARAN ACOUSTICS MASTER COLLECTION POWERA ISOLATION FEET

The new Karan Acoustics Master Collection POWERa Amplifiers sport CMS CS2-1.5 isolation/support feet which are suitably sized and comfortably support the net weight of 105kg of a single POWERa amplifier. Such a high mass with central stability of the chassis allows for only three CS2-1.5 feet to be used, allowing the amps to balance on any supporting surface.

Karan Acoustics Master Collection POWERa Amplifiers

Karan Acoustics Master Collection POWERa Amplifiers feet

LINE CONDITIONER

In order to protect a power output amplifier like the Karan Acoustics Master Collection POWERa, Milan says that a suitable Line Conditioner with an efficient DC “eliminator” is needed. This device must not have a negative influence on the inherent sound the amplifier itself. Secondly, it needs to be generously specified in terms of current and voltage flow from the mains supply, so it is able to cater for at least three times more than the maximum required. In real numbers that means a rating of 60A or more.

Karan Acoustics Master Collection POWERa Amplifiers

Inside the Karan Acoustics Master Collection POWERa Amplifiers

KARAN ACOUSTICS MASTER COLLECTION POWERA MONO TECHNICAL SPECIFICATIONS

Inputs: 1 balanced (XLR) and 1 unbalanced (RCA)

Input impedance: 30kOhm (balanced/unbalanced)

Input sensitivity: 2.0V/RMS (for max output)

Gain: +36dB

XLR pin layout: PIN1-ground,PIN2-positive signal,PIN3-negative signal (when using RCA input you need to insert XLR shorting plug!)

Power output: 2.100 / 3.600 / 6.000 W at 8/4/2ohm (peak power output: 2.400W at 8ohm)

Frequency response: 20 Hz to 20 kHz, +/-0 dB; (DC to 300kHz, -3 dB)

Distortion: THD 0.03% IMD 0.03%

Speed: Rise and Settling time < 450 ns

Slew rate 1.500 V/us (Amplification stages)

Signal to noise ratio: >120dB (unweighted)

Power supply: 2pcs of 2.700VA low noise toroidal transformers, 210.000uF custom made capacitors bank

AC voltage:  115V or 230V (nominal line voltage)

AC voltage range:  +/- 10% (from nominal line voltage)

Warranty:  5 years, parts and labour

Net dimensions:   504 x 292 x 603mm (whd); 19.8 x 11.5 x 23.7 inch (whd)

Net weight: 105kg / 231lbs (each)

Package dimensions: 720 x 410 x 820mm (whd); 28.3 x 16.1 x 32.3 inch (whd)

Net weight:  130kg / 286lbs (each)

KARAN ACOUSTICS MASTER COLLECTION POWERA STEREO TECHNICAL SPECIFICATIONS

Inputs: 2 balanced (XLR) and 2 unbalanced (RCA)

Input impedance: 30kOhm (balanced/unbalanced)

Input sensitivity: 2.0V/RMS (for max output)

Gain: +30dB

XLR pin layout: PIN1-ground, PIN2-positive signal, PIN3-negative signal (when using RCA input you need to insert XLR shorting plug)

Power output: 2×650 / 2×1.100 / 2×1.800W at 8/4/2ohm (peak power output: 800W at 8ohm)

Frequency response: 20 Hz to 20 kHz, +/-0 dB; (DC to 300kHz, -3 dB)

Distortion: THD 0.03% IMD 0.03%

Speed: Rise and Settling time < 450 ns

Slew rate 1.500 V/us (Amplification stages)

Signal to noise ratio: >120dB (unweighted)

Power supply:  2pcs of 2.100VA low noise toroidal transformers, 210.000uF custom made capacitors bank

AC voltage: 115V or 230V (nominal line voltage)

AC voltage range:  +/- 10% (from nominal line voltage)

Warranty:  5 years, parts and labour

Net dimensions: 504 x 292 x 603mm (whd); 19.8 x 11.5 x 23.7 inch (whd)

Net weight:   105kg / 231lbs

KARAN ACOUSTICS MASTER COLLECTION POWERA PRICE AND AVAILABILITY

Recommended Retail Price for Master Collection POWERa stereo is 39.000€

Recommended Retail Price for Master Collection POWERa mono is 77.500€/pair

The Karan Acoustics Master Collection POWERa amplifiers and mono amplifiers are available now and shipping from the factory in Novi Sad, Serbia. Smaller mono and stereo variants of the design (POWERb and POWERb mono) will, hopefully, start shipping in the latter part of 2022.

Karan Acoustics Master Collection POWERa Amplifiers

HiFi Pig Says: Despite delays in part supplies and other effects of the pandemic, it is fantastic to see High End HiFi brands like Karan Acoustics getting their new models out of the factory and to audiophiles around the world, we very much look forward to being able to hear them soon.

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