Product Description:
KSA50 and KSA80 are praised as the most vocal Krell amplifiers, among which KSA50 is Krell&x27;s first power amplifier, and it is also the peak of its home (in terms of tone). To this day, Nelson Pass, the chief designer of the American premium audio brand PASS and the founder of the best sound brand Threshold, also said that the KSA50 line is better than the current 95% HI-END amplifier
product details:
1 The original Anson MJ15024G/MJ15025G and MJE15034/MJE15035 are used.
The 2-stage coupling capacitor uses WIMA top-level capacitor 1UF, which has natural sound and wide sound field.
3 resistors use high-precision cylindrical color ring chip resistors, the main circuit uses a precision of ± 1% of the five ring gold
It is a membrane resistor that guarantees a good signal-to-noise ratio of the whole machine.
4 PCB adopts 1.6mm thick double-sided sheet, 2.0 oz copper thick spray tin process to ensure the size current
Good pass performance. First-class PCB quality.
5 The biggest feature of this board is the use of advanced speaker protection circuit to effectively eliminate the impact of opening and closing.
Sound and DC output protection makes your speakers safer.
6 The layout of the entire circuit board is quite rigorous and reasonable, and the overall PCB trace adopts a grounding method.
The power amplifier board works stably and reliably, and the output power is large; the sound is beautiful and round, and the sound field is wide. stereoscopic
Strong sense, low frequency and solid, strong signal to noise ratio, wide dynamic range; clear details,
Excellent transient response, play all kinds of music, and have a good time in the family&x27;s playback environment.
Wrong performance.
Input voltage: plus or minus 30V-50V DC, AC single 12V-15V (single group, two-channel two groups). It is recommended to use +-45V
Output power: Class A 50W+50W without distortion power, Class A and Class B is 250W+250W undistorted power output.
Output impedance: 4-8 ohms
After the power is turned on, the red light is on, and the circuit is normal for 3-5 seconds.
Single board size: 280*95*45mm (with heat sink)
Single weight: 0.5KG
Static current is recommended for 1.2A, which requires more than 2 kg of heat sink
JP6 JP7 is a quiescent current test point