Specifications subject to change without notice.

Mapletree Ear+ HD II

Sidewinder

OD300

Mellow Boy

Topology

SET

SET

SET

OTL

Power Out into 32 Ohms

70 mW

200 mW

0.7 w

50 mW
0.6 W (200 Ohms)
1W (400 Ohms)

Power Out into 16 Ohms; HiZ output

-

100 mW

1.4 W

-

Frequency
Response

10 Hz-20 kHz -1dB

10 Hz-40 kHz -1dB

10 Hz-40 kHz -1dB

10 Hz-40 kHz -1dB

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)

1x6336 (new)
1x6SL7GT (new)

nput impedance

25k Ohms min

50k Ohms

50k Ohms

50k Ohms

Output impedance

3.5 Ohms

0.75 Ohms

1.1 Ohms

75 Ohms

Recommended headphone impedance

30-600 Ohms

16-600 Ohms

16-600 Ohms

 >32 Ohms

Power consumption (120 VAC or 240 VAC, 50-60 Hz)

35 W

35 W

90 W

155 W

Footprint

single chassis
6" x 10"

single chassis
6" x 10"

two chassis
5" x 9"

two chassis
6" x 10"

Options

choice of side panel finish

  6AS7G output tube

History

2002 - 2019 (latest edition)

2014

2014

2019

Appearance

black textured chassis with
choice of wood side panels (see above)

black chassis with
oak corner posts

black chassis with
oak corner posts

black chassis
with
oak corner posts