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Constellation Altair II

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Sound quality.

Consider Altair II a collaborative effort. It began with the original Altair, created by Constellation Audio’s “dream team” of the world’s best audio engineers and industrial designers. Our engineers then refined these original concepts using feedback from our dealers and customers. The result is a product with a more user-friendly interface yet that retains the same sound quality as the original Altair, acclaimed by a leading audio magazine as setting a new standard “in virtually every sonic and musical criterion.” Altair II is an uncompromising blend of sophistication, craftsmanship, and convenience: the optimal marriage of form and function. Its enhanced user-friendly design ensures effortless enjoyment of your listening experience.

Mirror-imaged FETs & servo circuits: Our Line Stage Gain Module utilizes two amplifiers, one for the positive & one for the negative halves of the audio signal. Hand-matched, ultra-low-noise FETs & servos provide excellent balance. Slew rate & frequency response is boosted, resulting in an incredible 200kHz bandwidth.


4 XLR stereo, 4 RCA stereo
2 XLR stereo, 2 RCA stereo
Output noise:
<20 uV dB, 20 Hz - 20 kHz
0.001%, 20 Hz - 20 kHz @ 2V out, RI >10 K
0.1%, 20 Hz - 20 kHz @ 10V out, RI >10 K
Frequency response:
10 Hz to 200 kHz, +/- 0.5 dB
Input impedance (balanced):
200 K
Input impedance (single-ended):
100 K
Output impedance:
< 50 ohm
Volume control resolution:
0.1, 0.5, or 1 dB; user-selectable
Recording outputs:
1 XLR stereo, 1 RCA stereo
84 lbs / 38.2 kg, line stage
26.2 lbs / 11.4 kg, power supply
Dimensions (W x H x D):
17.5 x 5.53 x 14.8 in (whd), line stage
44.5 x 14 x 37.6 cm (whd), line stage
17.5 x 2.82 x 14.5 in (whd), power supply
44.5 x 7.2 x 36.8 cm (whd), power supply