Vacuum Tube Sound for the 21st CenturyMapletree Audio Design offers a unique range of products designed and hand crafted by Dr. Lloyd Peppard, a retired electronics engineering professor. The goal is to increase your enjoyment of recorded music through the use of vacuum tube amplification and signal processing.
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monoloc power amplifier - 50 W with KT88s
running class AB1 ultra-linear with fixed
bias. Triode mode switch. Built on a stainless steel
Dynaco Mk III chassis with Mullard topology
driver circuitry (6SJ7 voltage amplifier and 6SN7GT
long-tail phase inverter) and Dynaco spec output and
power transformers. WIth premium passive components and
a very stiff power supply, the sonics are effortless and
open, espeicially noticable on high level transients.
Available for 240 VAC ( $30 additional).
Super Stealth monobloc
power amplifier. Using the EH 6V6GT tubes
in class AB ultra-linear push-pull, the Super Stealth
delivers a clean 8 W, making it suitable for a wide
range of speaker systems.
Super Stealth SE monobloc power amplifier. The special edition of the Super Stealth includes provision for 12 V or 6 V driver tubes, dc balance adjustment for output tubes, and bias adjustment.
Red octal driver module
for Dynaco Stereo 70 power amplifiers. A drop in,
point-to-pointwired driver board using Mullard
driver topology with 2-6SJ7 and 2-6SL7GT tubes.
Line and Speaker Routers
LR 1 Line Router
Any combination of 6 or less I/O lines is possible. Engineered To Order (ETO) lets you design it yourself to suit your needs.
Ideal for switching line sources between headphone amplifier or preamp or adding additional line inputs to preamp.
LR 1 Pro Balanced Line Router
Any combination of up to 3 inputs and/or outputs.
Neutrik XLR connectors.
SP 1 Speaker/Amplifier Router
Two power amplifiers to one speaker system or one amplifier to two speaker systems.
Bi-directional (either configuration can be used in reverse direction if needed).
ETO (Engineered To Order): Expanded I/O capability can be provided . Prices available on request.