Mapletree Headphone Amplifier Technical Specifications


Specifications subject to change without notice.
Mapletree Ear+ HD

SugarMaple Sidewinder

SugarMaple OD300
SugarMaple
Viper

Power Out into 32 Ohms; HiZ output
70 mW
200 mW

700 mW

100 mW (150 Ohms)
200 mW (300 Ohms)

Power Out into 16 Ohms; HiZ output
-
100 mW
1400 mW
-
Frequency
Response
10 Hz–20 kHz
-1 dB
10 Hz–40 kHz
-1 dB
10 Hz–40 kHz -1 dB
10 Hz-20 kHz
-0.8 dB

Gain (1 kHz; HiZ output)
gain is approximately 3 dB lower at LoZ output
10 dB
14 dB
9 dB
24 dB
Phase
non-inverting
non-inverting non-inverting inverting
Tubes supplied
2x12B4A (NOS)
1x12AX7/5751 (new)
2x6DJ8 (new)
1x12AX7 (new)
1x6080 (NOS)
1x6SL7GT (new)
4x6922/6DJ8 (new)
1x12AX7 (new)
nput impedance
50k Ohms
50k Ohms 50k Ohms 50k Ohms
Output impedance (LoZ output)
output impedance is approximately double for HiZ output
3.5 Ohms
0.75 Ohms
1.1 Ohms
28 Ohms
Recommended headphone impedance
(Any headphone impedance can be connected to either HiZ or LoZ outputs with a 3 dB reduction in output level for LoZ at same volume setting.)
30–600 Ohms
16–600 Ohms
16–600 Ohms

 >150 Ohms
Power consumption (120 VAC or 240 VAC, 50-60 Hz)
35 W
35 W
90 W
~ 60 W
Footprint
single chassis
6
" x 10"
single chassis
6" x 10"
two chassis
6" x 10"
single chassis
6" x 10"

Options
choice of chassis
color/side panel finish

  6AS7G output tube

History
2002
2014
2014
2017
Appearance
painted chassis with
choice of wood side panels (standard is black chassis
with oak side panels)
black chassis with
oak corner posts
black chassis with
oak corner posts
black chassis
with
oak corner posts