Specs taken from a brochure...
Stereo:
AX-600
PWR: 165x2@4, 300x2@2, 600x1@4
THD: 0.025% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 16.1 x 11 x 2.7
AX-1000
PWR: 300x2@4, 500x2@2, 1000x1@4
THD: 0.025% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 19.6 x 11 x 2.7
AX-2000
PWR: 600x2@4, 1000x2@2, 2000x1@4
THD: 0.025% at rated 4 ohms
Damping Factor: >1000
DIM (LxWxH): 27.5 x 11 x 2.7
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Multichannel:
AX-4300
PWR: 75x4@4, 90x4@2, 180x2@4
THD: 0.025% at rated 4 ohms
Damping Factor: >200
DIM (LxWxH): 16.1 x 11 x 2.7
AX-5600
PWR: 75x4@4, 90x4@2 + 500x@1 (Sub)
THD: 0.025% at rated 4 ohms
Damping Factor: >200
DIM (LxWxH): 19.6 x 11 x 2.7
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Class DE:
AX-500DE
PWR: 300x1@4, 500x1@2, 750x1@1
THD: 0.1% at rated 4 ohms
Damping Factor: >250
DIM (LxWxH): 9.1 x 11 x 2.7
AX-1000DE
PWR: 350x1@4, 700x1@2, 1000x1@1
THD: 0.1% at rated 4 ohms
Damping Factor: >250
DIM (LxWxH): 16.1 x 11 x 2.7
AX-1500DE
PWR: 500x1@4, 900x1@2, 1500x1@1
THD: 0.1% at rated 4 ohms
Damping Factor: >250
DIM (LxWxH): 19.6 x 11 x 2.7
AX-3000DE
PWR: 1200x1@4, 2000x1@2, 3000x1@1
THD: 0.1% at rated 4 ohms
Damping Factor: >250
DIM (LxWxH): 27.5 x 11 x 2.7
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Tubes:
AX-TU300C
PWR: 100x2@4, 160x2@2, 320x1@4
THD: 0.05% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 13.6 x 11 x 2.7
AX-TU600C
PWR: 165x2@4, 300x2@2, 600x1@4
THD: 0.05% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 16.1 x 11 x 2.7
AX-TU1000C
PWR: 300x2@4, 500x2@2, 1000x1@4
THD: 0.05% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 19.6 x 11 x 2.7
AX-TU4300C
PWR: 70x4@4, 90x4@2, 180x2@4
THD: 0.05% at rated 4 ohms
Damping Factor: >600
DIM (LxWxH): 16.1 x 11 x 2.7