Analog Domain The Isis 系列


上圖為Isis M75A

The Isis系列共有三款擴大機，兩款為綜合擴大機分別為M75D和M75A。另一款為兩聲道後級擴大機M75P。

Isis M75D



精確的128段音量控制，每格可調整0.75dB，可調整範圍為96dB。
有兩聲道模式和單聲道模式，兩聲道模式為各聲道250W/8ohm，單聲道模式為500W/8ohm。
可調整增益。有耳擴功能。

Features:
Volume control via switched, low-noise discrete resistor matrix
96 dB attenuation range in 128 precise steps of 0.75dB
Stereo mode and bridged mono mode
2x 250W @ 8ohm, 2x 400W @ 4ohm in stereo mode, 2ohm capable
1x 500W @ 8ohm, 1x 800W @ 4ohm in bridged mono mode
2x XLR balanced line inputs + 2x RCA line inputs with individual gain adjustment
6Vrms input level compatible, 10Vrms max input level
Pre-out and Main-in connectors for connecting an auxiliary processor or power amp
High-performance dedicated headphone amplifier
Full function remote control

Isis M75A



兩聲道模式為單邊250W/8ohm，橋接單聲道為500W/8ohm。
有增益調整和耳擴功能。
可用於前級輸出或主要連接器或是連結後級擴大機。

Features:
Volume control via precision, long-life potentiometer
100’000+ cycles typical potentiometer life expectancy
Stereo mode and bridged mono mode
2x 250W @ 8ohm, 2x 400W @ 4ohm in stereo mode, 2ohm capable
1x 500W @ 8ohm, 1x 800W @ 4ohm in bridged mono mode
2x XLR balanced line inputs + 2x RCA line inputs with individual gain adjustment
6Vrms input level compatible, 10Vrms max input level
Pre-out and Main-in connectors for connecting an auxiliary processor or power amp
High-performance dedicated headphone amplifier

75D+75P



下方的M75P為立體聲後級擴大機。

同時使用M75D和M75P可做下列的方式運用:

4x250W/8 (4x400/4) – 4-way system or 2x 2-way split system
2x500W/8 (2x 800W/4) in bridged mono mode – 2-channel high power system 2x250W/8 (2x400W/4)+ 1x500W/8 (1x800/4) – 3-way split system
Source selection, volume and power on/off are managed by the M75D unit

官方網站提供三款擴大機的規格比較表:

SPECIFICATIONS

Parameter Condition Isis M75D Isis M75A Isis M75P
Power output 8 ohm, sine wave, rms 250W
4 ohm, sine wave, rms 400W
8 ohm, bridged, music material 500W
4 ohm, bridged, music material 1000W
Damping factor 1kHz, 4ohm load, single-ended >1000
1kHz, 4ohm, bridged mode >500
THD+N 20kHz BW, 8ohm, nom. power <0,002% <0,002% <0,001%
THD+N 20kHz BW, 4ohm, 1W output <-93dBr <-93dBr <-95dBr
Power bandwidth 2 ohm, THD<0.1% 5Hz-50kHz
Peak current 50A
Noise output 20kHz BW, rms <35uV <35uV <25uV
Dimensions, mm Including feet and rear handles 440W x 454D x 123H
With packaging 560W x 560D x 200H
Net weight ~25kg

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