Mapletree 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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![]() ![]() ![]() ![]() ![]() ![]() ![]() Click on tubes for more information! |
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Customer Photos of the Month ![]() ![]() ![]() Murray Smith (New Zealand): Mapletree forest! Vinyl: Project RPM 10 table and arm Cartridge, MC Dynavector 20X. CD: Arcam DV 139 FMJ. Pre amp. MAD Ultra 4A SE with PS2 power supply. Thingy high-level crossover/ambience recovery. High
frequency: 2 x Super Stealth monoblocks, Low frequency: 2 x Super
Stealth monoblocks, all with user-designed stainless steel cages.
Ambience (rear) channels: 2 x Antique Audio 20 watt mono blocks. Speakers:
B&W 803 Signature speakers front main channels. Subwoofer: B&W AWS 750 (12"). Ambience speakers (in
wall): B&W x 4, switchable from Crossover. Interconnects: All Van Den Hull. D 102 Mk111 Hybrid. Speaker cables:
Anticables, (solid copper) 1m long.
May News and Specials • Mapletree Audio Line 2A SE Preamp wins "Affordable$$Audio 2007 Big Bang, Little Bucks Award". See the January Issue of Affordable$$Audio (www.affordableaudio.org).• New product - the "Thingy" crossover and multi-channel driver. Based on the concepts described in the Branches newsletter issue 4 , the MAD Thingy is in production. It features buffered high and low pass filters to implement a 500 Hz high-level crossover for driving multiple speaker systems or bi-amp aplications, plus outputs for ambience and subwoofer channels. For more details, you can download the user's manual. User comments. Introductory price is $850. ![]() ![]() ![]() • First order placed--photos later this month! Based on the experience with the HD200 above, a new Ear+ HD Super is in the works. Like the HD200, it has tube rectification and a higher voltage power supply than the HD which will increase power output for hard to drive headphone types as well as allow multi-headphone connections. The Ear+ HD will continue as the flagship product recommended for most applications. |
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| Mapletree Audio Design Product Overview | ||
| Go to: Preamps • Headphone
Amps • Power
amps • Other products NOTE: All MAD components, with the exception of the Super Stealth power amplifiers, are available for 230-240 VAC 50 Hz at no extra cost. Super Stealth monoblocs for 230-240 VAC are available at a slightly higher price. Chassis colors include RCA
Red, textured
black, Sylvania Yellow, British
Racing Green, and
eggshell white. Solid wood side panels are
finished in ebonized black or natural red oak. |
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Preamplifiers |
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| Magic 5B SE Triplex Line Preamplifier (kit and assembled)
• Three line inputs, two outputs (one
with optional
10 dB attenuation for high output sources). Reviewof
the Octal 6 by Richard George (TNT-Audio)
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Line 2A SE Line Preamplifier (kit and assmebled) Review
of Line 2A SE by John
Hoffman in Affordable Audio
July/07 issue
• Premium
passive
components include Auricap coupling capacitors. |
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Phono 4 SE Phono Preamplifier
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Ultra 4A SE Phono/Line Preamplifier "MAD [Ultra 4] is my vote for best bang for the buck, heck maybe even best product contention at any reasonable price". NEW! Customer
Review
of Ultra 4A and Ear+ Purist
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PS 2 Power Supply (included with Line 2A SE (assembled and as a kit), Phono 4 SE, and Ultra 4A SE) ![]()
• Provides 12 VDC@1A (regulated)
and +200
VDC@15 mA. |
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Headphone Amplifiers |
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| "Now I have to listen to all my CDs all over again. I have a decent stereo system but with the Ear+ it sounds like a $20,000 setup". Review
of the Ear+ by Steve Albers on Audio
Asylum |
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Ear+ HD High Definition Headphone Amplifier (kit and assembled) ![]() • Outstanding headphone performance for a wide range of headphone impedances and drive requirements. • 2 x 12B4A NOS and 1 x 5751/12AX7/ECC83 tubes. • High and low impedance headhone jacks. • Premium passive components include Tantalum film plate resistors and Black Gate capacitors in signal path. • Ultra high-speed rectifier diodes and Alps volume control are standard. • Passive line output for use as a passive preamp. • Dual inputs for easy patching into system. More Information • Customer Comments |
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Super Stealth monobloc
power amplifier
(kit and assembled). Using the new 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. Available as a kit or factory
assembled. |
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Special 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. ![]() ![]() ![]() More Information Installation Manual |
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Other Products |
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Eyes for your Ears! The Viper Magic Eye Monitor. Left and right channel levels are displayed by two 6E5C cathode ray tubes. Includes response speed and sensitivity controls with built in 12SC7 voltage amplifier stage. More information. |
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LR 1 Line Router ![]() ![]() • Any combination of 6 or less I/O lines is possible. 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 model features 3–2 switching with balanced I/O and XLR connectors. ![]() |
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Dr.
P spins some 78s on his mini system. Photo by Christian Keresztes
For more information or to place an order, please telephone or email Lloyd Peppard at (613) 387-3830 info@mapletreeaudio.com Lloyd Peppard
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