Spectral Audio DMA-100 MKII

NOTE: SPECIAL DISCOUNTS DO NOT APPLY FOR Spectral Audio PRODUCTS

In 1982 Spectral engineers pioneered the industry's first wideband, high-speed audio power amplifier. The Spectral DMA-100 Class A Instrumentation Amplifier marked the origins of Spectral's unique fast-settling fet amplification topology and, in concert with the innovative DMC-10 Preamplifier, formed the first high-speed, high-resolution audio component system. Almost eighteen years later, Spectral's precision approach to component system design continues to evolve and receive wide acclaim as the ultimate in signal accuracy and realism. High-speed amplifier technology was first made practical by the DMA-100 Class A amplifier and all subsequent Spectral amplifiers draw their basic engineering inspiration from this original benchmark design. To commemorate the introduction of the first high-speed instrumentation audio amplifier, Keith Johnson and the Spectral design team are pleased to introduce the DMA-100S Compact Reference Amplifier. The DMA-100S pays homage to the original Spectral amplifier while setting contemporary standards in musical performance and high value for the millenium.

Inspection of the new DMA-100S reveals many similarities with the original Spectral amplifier, including similar power and topologies. Although alike in many regards, the compact, cool-running design of the DMA-100S attests to the many engineering advances made since the 1980s at Spectral. The DMA-100S is actually a contemporary marriage of our state-of-the-art DMA-150 and compact reference DMA-90 technologies. Conceived by Dr. Keith Johnson as a compact reference for recording work, the DMA-100S features a magnificent combination of design elegance and convenient size mirroring the classic packaging of our SDR-2000 and SDR-3000 reference components.

As with earlier Spectral compact amplifiers, little in the restrained appearance of DMA-100S forewarns of the unusual performance potentials which exist within. For under the hood of the DMA-100S lurks the heart of the DMA-150 Reference Amplifier with its proprietary "Focused Array" output section design. In this premium topology, each matched output device is mated to its own power supply, including individual filter capacitors, rectifiers, and transformer secondary windings. The enormous power supply regulation of the DMA-100S rivals that of the high-current DMA-150 also, with 10,000 uf per output device available. This breakthrough topology aligns high-current fet output devices for rapid, pistonic signal launch, with full rated power delivered with absolute load stability at 1 MHz. The resultant output section response capability is unprecedented in an audio amplifier of this power. Speaker control with the DMA-100S is startling, with transient and dynamic resolution of fine recordings equalled only in our most premium amplifier designs.

The high-value DMA-100S makes premium discrete circuit topologies, which were only available previously in Spectral's high-current reference designs, available for a fraction of the cost. The DMA-100S offers state-of-the-art performance, new design refinement and extraordinary value in the Spectral tradition. The DMA-100S represents the innovative thinking and quality commitment of the original Spectral DMA-100 and more. We think you will agree, some good ideas really deserve an encore.
  Power Output: (continuous): Stereo @ 8 ohms - 100 Watts RMS
Stereo @ 4 ohms - 200 Watts RMS
(Minimum at clipping) Stereo @ 8 ohms - 159 Watts RMS
Stereo @ 4 ohms - 250 Watts RMS
Output Current: 22 Amps per channel
Frequency Response: ±0.1 dB, DC-150 KHz
±1 dB, DC-1 MHz
±3 dB, DC-1.8 MHz
Distortion Static: Less than 0.015% from DC to 100 KHz,
typically 0.009% @ 100 Watts RMS/8 ohms
Distortion Dynamic: 8 Tone Cluster Test 20 KHz @500 Hz separation
0.01% 8 ohms, 0.015% 4 ohms
Rise Time: Less than 300 nanoseconds
Setting: 1.5 microseconds to -40dB
Slew Rate: 1,000 volts/microsecond
Signal to Noise: 90dB unweighted, 107dB ASA A
Crosstalk: 80dB @ full power 8 ohms
Input Impedance: 10K ohms in parallel with 100 pf
Sensitivity:  1.5 volts/nominal output
Line Voltage: 100 volts, 120 volts
240 volts (factory wired)
AC Voltage Range:  ±10%
Maximum Consumption:  800 Watts
Quiescent Consumption:  125 Watts
Operating Temp: 0° to 50° Celsius range
32° to 122° Farenheit
    Gewicht: 14,5kg
Breedte: 482 mm
Hoogte: 101 mm
Diepte: 394 mm