Raysonic Red Maple is a 2 channel mono-block power amplifier designed for high end audiophiles and dedicated music lovers. Our goal is to maximize the stability and yet minimize the requirements on adjustments.In order to achieve high quality in both technicality and good sound in music production, our first priority in the circuit design is to achieve low noise and distortion and at the same time maintain a wide band frequency response in the amplifier. We have chosen KT88 power tube as the core component of class-AB1 Uitra-linear push pull power amplification stage because of its ultra linearity properties. We connected the plate grid and the plate of beam power tetrode or pentode power tube in parallel as a connection.This can reduce the internal impedance of power tubes largely,and increase the features and fidelity factors.
In addition,five pairs of KT88 beam power tube are used to achieve an output power of 220 watts in this amplifier.Using five pairs of KT88 can reduce 5 times plate resistance; hence ,we can increase the damping factor of the amplifier and the slew rate of the speakers driven by the amplifier. Most high end audio amplifiers use a plate cathode as a phase splitter.The drawback of this approach is that inconsistent output impedances occur between the positive and negative phase.Because of this reason, a plate cathode based design amplifier will have significant distortion in the high frequency range.
The Raysonic Red Maple adopts a cathode coupled phase splitter to avoid the above problem,thus we can greatly improve the fidelity factor and add the XLR input function. The design of Raysonic Red Maple focuses on its direct and simple operation. All single paths are hand wired point to point circuitry that guarantees the consistency and the flow of production work smoothly without mistakes to