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At first I didn't even want to hook-up a 70 watt/channel amplifier to my VonSchweikert VR4-JR loudspeakers. Past experience with small amps, such as the original NuForce 8.0s, just didn't cut it as they quickly ran out of power on most material.

But finding out that the Operetta amplifer could drive them to loud levels wasn't the only suprise. This amp also sounded great - not just good enough. Although it dosen't quite match my Flying Mole DADM-310 monoblocks - almost nothing can - it is quite pleasing and detailed. Vishay resistors, and Nichicon and Wima capacitors used throughout. This is truly an amp that put a smile on your face. It will please 99% of audiophiles. In both build and sounnd quality, this is easly a $2K amp, selling for half of that.

The two-channel AP2145 is only $995.00 and the five-channel AP5145 is only $1,595.

Operetta's basic two-channel AP2140A amplifier is a lot more than just two channels of stunningly competent power. At its heart is a modular design that allows our customers to modify it to suit them.

Elegance, simplicity and attention to detail rule its design. At its core sit two power modules comprising National Semiconductors' LM3886 High-Performance Audio Power Amplifier IC. Each module produces 70 watts into 8 ohms, modest by modern standards, but like tube amps, these are sophisticated watts. More importantly, the combined attention to circuit geometry and quality components yields power with total harmonic distortion so low it left National Semiconductors' own engineers double checking their instruments. Click
here for his testing graphics and review.

All of this represents an elegantly radical approach to circuitry so effective as to belie numbers. The proof is in the listening:
laser-like focus, precise separation, deft detail, and sweeping soundstage.

Yet simplicity also drives a remarkably modest price, value compounded by Jaton's inherent flexibility. Modular design means the basic AP 2-140 series chassis is ready, willing and wired to accommodate from two to five amp modules. Adding modules is a simple plug-and-play operation, not much more complicated than changing a light bulb. The basic two-channel stereo amp is easily expandable at any time, to four channels for bi-amping, or five channels for a full-on home theater system.

The AP2140A and AP5140A are final assembled and tested in our headquarter Milpitas, California. It's clean and simple chassis is available in three finishes: black panel bordered by
mirrored aluminum, silver with mirrored aluminum or simple silver.

AP5140A

AP2140A

Max Distribute Power

140 Watts @ 4 Ohm
70 Watts @ 8 Ohm

Distribute Channel

5 Channel

2 Channel

THD + N %

< 0.01%
@ 4Ohm, 1 kHz, 140 Watts

< 0.01%
@ 4Ohm 1 kHz, 140 Watts

Frequency Response

16 Hz ~ 40 kHz, +/- 3 dB

Max Output Level

23 Vrms

Input Sensitivity
for 1W output

84 mVrms

Dynamic Range

150 dB

Max Gain

30 dB

Max Power Consumption

1900 watts

950 watts

Input Impedance

55 k Ohm

Input Connection

5 of Unbalanced
gold plated RCA

2 of Unbalanced
gold plated RCA

Output Impedance

4, 6, 8 Ohm

Output Connection

5 Pairs of 5 Way Binding
Posts

2 Pairs of 5 Way Binding
Posts

Dimensions

17.0” x 7.5” x 14.5”
(W) (H) (D)

Weight

55 LBS

47 LBS

Specification: Final Assembly and Test in California, U.S.A.

SOUNDSTAGE.COM: CES SHOWSTOPPERS

Jaton Operetta two-channel AP2145: $995.00

Jaton Operetta five-channel AP5145: $1,595

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