finished board , 2 pcs = 155.88$
Reference Kerry KSA100 MKII line, the output of each channel using three pairs of imports Anson MJ15024 15025 parallel output, sound more transparent, low frequency dive and full of spring,
Design LM334 do constant current source, tone style to balance the main, pure HIFI fever style,
Audio input: the 2240 and 970 on the tube after processing, sent to the 610 and 9610 field tube processing, field treatment to make the sound supple and sweet, and then sent to promote the tube (ON Semiconductor MJE15032 15033) to promote the power level tube three pairs of six tubes in parallel Output (original ON Semiconductor 15015025) to achieve sound playback.
Product size: length 270MM, width 110MM, high 36MM
Frequency range: 10Hz-30K
Minimum distortion: <0.0006%
Signal to noise ratio: 100dB
Input impedance: 50k
Channel separation: 90dB
Maximum output power: 300W 8 ohms (Class A adjustable 60W, need to self-regulation)
Input voltage: DC positive and negative 35V-65V (DC DC dual voltage three lines) Transformer requirements in more than 400W (need to buy their own power supply rectifier board)
Output power: AB class: 300W +300W, a class adjustable 60W 4-8 ohm (adjusted to the need for a large enough heat sink, the general monolithic to 2.5KG above the weight of the heat sink; Class A class AB issued, Class A need to adjust their own class)
Note: the default static current delivery 200MA, AB class delivery,