W4S ST500

W4S ST500

The Wyred 4 Sound ST 500 amplifier is an extremely powerful amplifier at an exceptionally affordable price that will find great appeal among the rabid audiophiles among us as well as to audio newbies and music lovers just looking to choose an amplifier they can live with and be done with their search.  -   Positive Feedback Review

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ST Series Specifications

ST-250

ST-500

ST-1000

Typical THD+N 8ohm (10W out)

0.009%

0.005%

0.008%

per channel

per channel

per channel

Power Output 8ohm @ 0.2% THD+N

100W

250W

570W

Power Output 8ohm @ 1.0% THD+N

125W

320W

615W

Power Output 4ohm @ 0.2% THD+N

195W

550W

1,140W

Power Output 4ohm @ 1.0% THD+N

220W

625W

1,225W

IMD (CCIF)

0.0005%

0.0005%

0.0005%

Transient Intermodulation (TIM)

0.004%

0.003%

0.005%

Output Idle Noise

90uV

80uV

80uV

Efficiency 4ohm

78% @ 200W

80% @ 500W

78% @ 1000W

Efficiency 8ohm

79% @ 100W

77% @ 200W

77% @ 500W

Frequency Response 20Hz–20kHz

± 0.4db

± 0.3db

± 0.4db

Lower Bandwidth

3.5Hz all loads

3.3Hz all loads

3.3Hz all loads

Balanced Input Impedance

60.4k?

60.4k?

60.4k?

Unbalanced Input Impedance

60.4k?

60.4k?

60.4k?

Dynamic Range

110db

115db

118db

Gain

27db

27db

27db

Sensitivity

1.28V

2.1V

2.9V

Output Impedance

0.010ohm

0.005ohm

0.005ohm

Min Load

3ohm

2ohm

2ohm

Damping Factor (100Hz 8ohm)

4000

2000

2000

Max Output Current

11A

35A

40A

Channel Tracking

< +/- 0.1 db

< +/- 0.02 db

< +/- 0.02 db

Crosstalk (20-20kHz)

> 121 db

> 106 db

> 119 db

Idle power consumption

10w

20w

30w

Link
http://www.wyred4sound.com/webapps/p/74030/117839/332077

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