Up for sale here is a pair of Ketch Audio MDM-90. The design is based on powerful yet linear KT90 tubes operated in either the 100W Ultralinear or 50W triode mode.
The higher power Ultralinear mode provides higher driving power for harder to driver speakers while the lower power triode mode is ideal for speakers with easier load and a warmer sound. Other tubes used in the amps are 6SL7 and 6SN7 operated in class-A triode mode. Both top-performing small-signal and driver tubes.
Audition will be gladly offered on request if you live near by or willing to come over Pomona, California area. Please don't hesitate to ask for any questions you may have. Class A, all Triode front end. Output circuit Ultralinear or Triode switchable. 4x KT90 precisely matched for best performance.
2x 6SL7 first stage tubes. 2x 6SN7 phase inverter tubes. Standby switch to prevent cathode stripping on start up.100w RMS in ultralinear per channel. 50w RMS in Triode mode. Signal to noise level -90db.
Total harmonic distortion less than 0.1% at 1kHz. 4 & 8 ohm loudspeaker taps. Japanese steel transformers with low oxygen copper wires. High quality 2W metal film & wire-wound resistors. Custom hand wound output transformers.
Custom wound power supply choke. Ceramic valve holders for minimum leakage. Gold plated Input & speaker terminal. Usable with both 115V and 230V(there is a switch).
Size: 20"L , 10"W , 9"H (10" inc cover). Make appointment & Welcome to audition. Please view my other items. The item "Ketch Audio MDM-90 mono-block Tube power Amplifier KT90 6SN7 6SL7 805 6922 12AX7" is in sale since Wednesday, June 9, 2021. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps".
The seller is "wayneaudio2015" and is located in Thousand Oaks, California. This item can be shipped to United States.