notice : It is DIY kit need to weld itself. The kit does not contain 16 pairs of big tubes and 8 pcs 10000UF main capacitors. The two items need to be purchased separately.
The A60+ board is improved by the previous successful A60, increasing the number of output pipes (2 channels can support 16 pairs of (32) power pipes) so that they have better driving force and can be adjusted to a class a. There is also a low internal resistance high speed tube with a rectifier part enhanced to 120A, with better dynamic performance.
Different pipes have different timbre collocation, but note that this is pure post stage, some customers bring it to 2.1 speakers than bass, so buy subwoofer.
* * * with Tos 2SC5200.A1943, the taste is good, delicate, and the tone is full.
* * * with ON series of high-power tube, timbre, level overtone is very good, strong sense of convergence.
* * * with Japan's three grams of high-power tube, deep diving, good strength, low frequency and strong.
The circuit has been equipped with a rectifier circuit, so it only needs to connect the transformer and no need to plug the rectifier. Connection installation is very convenient. The full symmetry architecture plus the precise transistor pairing makes the midpoint free from debugging very stable.
Use voltage: AC24VX2 ~ AC42VX2 plus AC12V note: AC12V for protection circuit.
Output power: 200W 8 ohm 400W 4 ohm
Distortion: 0.002% signal-to-noise ratio: >100dB
Frequency response: 5HZ-40KHZ
PCB size: 273X88MM
Large capacitor installation diameter: 25-30MM
package include :2 channels amplifier DIY kit ( not include the 16 pairs tubes and the 8 pcs big capacitor)
if need the transformer can check this link ,thanks
https://product/500W-ring-transformer-outputs-36V-0-36V-36V-0-36V-12V-0-12V-0-secondary-10/514210_32868224310.html?spm=2114.12010615.0.0.297921a9bK35bZ