note: We will be closed for new orders for the
month of August. For those inquiries we have on
hand we will respond again at the beginning of
Line 2CRM Line Preamplifier (contact Lloyd
Peppard for more information)
Line 2B SE by Tim
Smith at wall of sound.
The Line 2CRM is an upgraded
version of the Line 2C line preamplifier which includes an Alps remote volume control, IR
receiver and handset at no additional cost. It also provides a Home Theater (HT)
mode in which the selected input source is passed to the output jacks, which are
automatically disconnected from the active circuitry (the preamp
can be turned off).
NEW! In addition to the standard maple
and oak, exotic hardwood end panels are available at no extra
cost. Shown below (L to R) are: Ebiara (Red Zebrawood),
Yellowheart, Peruvian Walnut, African Sapele, and Roasted Ash.
Line 2CRM features include:
Premium passive components - polypropylene
capacitors, metal film precision resistors, and Alps remote volume control.
Optimized circuitry for lowest distortion and noise.
3 inputs, 2 outputs, volume (with remote),
and balance controls.
Front panel Home
Theater (HT) mode switch effective on all inputs.
12SN7GT with rear panel switch for 6SNtGTB tubes
Separate PS 2D power
User's Manual for more information
3E Phono Preamplifier (contact Lloyd
Peppard for more information)
NEW! Custom side panels
to match the Line 2CRM/PS 2D (above right shown with
The Phono 3E
preamplifier incorporates low-level gain and phono equalization
stages for moving magnet phono cartridges and is designed to
operate alone or in conjunction with the Line 2CRM line
preamplifier. It has an output impedance of 2.5 kOhms, which can
drive a reasonable length of interconnect without compromising
the high frequency response. Noise at full output is less than 2
mV. It is designed to use the PS 2D power supply alone or shared with the
Line 2CRM (a second power jack on the rear panel allows the connection of
the PS 2D to both the Phono 3E and Line 2CRM
preamps without any modification). Two switched phono inputs are provided,
which can be ordered with custom loading specs. Tubes supplied
are two new production
12AY7s and one NOS
Details and full
specifications can be viewed by downloading the User's Manual.
(Black Buff) Line Level Buffer Stage (contact Al
Freundorfer for more information)
to facilitate tube rolling.
Sweeten the sonics of your
DAC or other digital source with the Black Buff line
stage. It features unity gain, 50K input impedance, less than 500
Ohms output impedance, and includes a volume control and
heater voltage switch for use of either a 6SN7GT or 12SN7GT tube
Manual for complete specs.
table listing the technical specifications of
all the Mapletree headphone amplifiers, click here.
Ear+ HD II
Headphone Amplifier/Passive Preamplifier (contact Lloyd
Peppard for more information)
Ear+ HD II is the latest edition of the Ear+
family of headphone amplifiers with new features
panel source selector switch for two line
preamp output bypassing the active headphone circuitry
while retaining the source selector and
2 x 12B4A NOS and 1 x 5751/12AX7/ECC83
headphone output compatible with a wide
variety of headphone characteristics.
Premium passive components include Panasonic polypropylene
output capacitors and Alps volume control.
Ultra high-speed rectifier diodes in power
supply. DC heater voltage.
powder coated finish with choice of natural maple,
natural oak or black oak side panels.
End panels are also available in the exotic
woods shown above for the Line 2CRM.
Dimensions: 7.5" x 10" footprint x 5" tall
The Mapletree Audio
Design Octal Duo (OD)300 Single
Ended Triode (SET) Stereo Headphone
Amplifier represents a high performance
development of an octal tube based headphone
amplifier. The use of a high capacity
provides increased power output and a
lower driving impedance employing a widely
output tube and 6SL7/5691 driver. The
separate power supply chassis allows
flexibility in positioning
each unit and reduces the heat seen by
components in the main amplifier chassis.
Download the User's
Manual or contact Al
Freundorfer for more
Guru Review: One Smooth Player
Mellow Boy Octal Duo OTL
new Mellow Boy Octal Duo OTL
(output transformerless) Headphone Amplifier
employs an all-octal tube lineup including a
6336 output and a 6SL7GT triode driver stage. The
high output power (over 1 W into 400 Ohms!)
and low driving impedance of the 6336 easily
handle any headphone sensitivity and impedance
An innovative "mellow control" on the rear
panel tailors the character of
the of the music being played. Softest is when
the dial is rotated completely clockwise and
crispest when completely counter clockwise.
For complete specifications, you can
download the User's
Manual or contact
for more information
Engineered To Order (ETO) Routers
Images are shown for example only. Chassis and layout are
selected to meet specific customer requirements.
Customers often have specific requirements that can be met
with custom features and/or modifications to existing
Mapletree products. Usually, these can be accommodated at
nominal extra cost. The most modifiable components are those
disigned to route signals and/or reconfigure system components, namely
the LR 1 Line Router,
the SP 1 Amplifier/Speaker Selector, and the SCC
1 System Configuration
Here is a brief summary of what is available. More
information can be obtained from the Branches
LR 1 Line Router - The
standard version is designed to switch one of up to three input stereo
signals to one of up to three outputs. Other
configurations are available to handle up to 6 inputs
and/or outputs. Chassis sizes are chosen to accommodate
the required I/O connections. As with all the Mapletree
switching components, RCA jacks are high quality gold
plated with inside and outside hex nuts, switches are
C&K enclosed rotary types with silver-plated contacts,
and wiring is silver-plated stranded copper with Teflon
LR 1 Pro Line Router - This is a
balanced signal version of the LR 1. The standard
model can switch up to 3 inputs and 3 outputs.
Additional I/O can be accommodated using special
multi-deck rotary switches. XLR connectors are Neutrik
gold-plated type with locking tabs on the female version.
< Custom LR
1 Pro with 4 inputs and one
"I received the switch [LR 1 Pro] today and it
is exactly what I wanted and works perfectly - no
noise at all when switching. I have bypassed my preamp
for my DAC and LPs and have a sonic improvement".
SP 1 Amplifier/Speaker Selector - The
simplest (standard) version switches the stereo output
of a power amplifier to one of two (or both) speaker
typical modification is the addition of a switch for
one or more amplifier inputs. All switches handling amplifier
output or speaker connections are high-current rated
versions of those employed in the LR 1 line router.
Multi (>2) speaker
switching uses toggle switches (see below).
All amplifier inputs are terminated with suitable load
resistors and binding posts are heavy-duty 5-way dual units.
SCC1 System Configuration Controller
- This is a custom combination of the LR 1 and SP
1 that allows switching of several sources to one or
more preamps or headphone amplifier, preamp outputs to one
or more power amplifier inputs, and power amplifier outputs
to one or more speaker systems.
1 is] simple elegant and effective. Does
exactly what I needed it to do and has significantly
reduced the effort involved in switching between
components. Just a wonderful product".
Custom SCC 1
For more information or to place an order,
please telephone or email Lloyd Peppard or Al Freundorfer as
referenced for each product or refer
to price list tab
158 Seabrooke Rd
1, Seeley's Bay, Ontario, Canada K0H 2N0
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