Jim ’81
Revolutionary amp offers both American and British tones
The Heptode Jim ’81 amp is based on our proprietary analog technology that emulates tube amps perfectly.
It offers very unique specifications, combining rich features, low weight, high reliability and awesome sounding.
Two independant channels inspired by Fender Blackface and Marshall JCM800 amps, adjustable output power up to 100W, effect loop, DI output with Cabinet Simulator, lightweight, availablle in combo, head or 1U rackmount versions.
These make the Jim ’81 a totally unique guitar amplifier.

Specifications
General
- 2 channels
- Combo 1×12″, head + cabinet speaker 1×12″ or 2×12″, 1U rackmount versions
- Adjustable output power from 0 up to 100W
- Effects loop
- DI output with speaker cabinet simulator
- Heptode proprietary analog emulation technology
- High end Class D audio power amplifier
- Silent (fanless)
- Designed and crafted in France to the highest standards
Inputs/Ouputs
- 2 Guitar inputs (front/rear panels)
- 2 Speaker outputs (4Ω minimum)
- 1 Footswitch input (channel selection)
- 1 Send output / 1 Return input (effects loop, +4dBU)
- 1 Line Out ouput (Jack)
- 1 DI ouput (XLR)
- Mains input : AC 115V or 230V
Output Power
- Max output power: 100W @ 4Ω; 50W @ 8Ω; 25W @ 16Ω
- Combo: 50W to the internal speaker, 50W available for optional external cabinet
Channels
- Leo: emulate a Fender Blackface amp
- Jim: emulates a Marshall JCM800 2203 amp
Controls (channel Leo)
- Volume
- Bass, Middle, Treble
- Power level (0 to max power)
Controls (channel Jim)
- Preamp Volume
- Master Volume
- Bass, Middle, Treble
- Presence
- Power level (0 to max power)
Other controls
- Leo/Jim channel switch
- Low/Full (15W/100W) max output power
- Cabsim on/off switch
- Ground lift switch for DI XLR output


Speakers
- Combo / 1×12″ Speaker Cabinet : Celestion Creamback Neo* 12″, 8Ω, 60W max
- 2×12″ Speaker Cabinet : 2 x Celestion Creamback Neo* 12″, total impedance 4Ω, 120W max
- Other speakers on request
Color
- Custom colors on request (Head/Combo)
Dimension and weight
- Rackmount: 48 x 4.4 x 22 cm, 2.0 kg (18.9″ x 1.6″ x 8.7″, 4.4 lbs)
- Combo: 48 x 48 x 24 cm, 12.4 kg (18.9″ x 18.9″ x 9.5″, 27.3 lbs)
- Head: 48 x 20 x 24 cm, 6.8 kg (18.9″ x 7.9″ x 9.5″, 15 lbs)
- Speaker Cabinet 1×12″: 48 x 48 x 24 cm, 10.1 kg (18.9″ x 18.9″ x 9.5″, 22.3 lbs)
- Speaker Cabinet 2×12″: 73 x 48 x 27 cm, 16 kg (28.3″ x 18.9″ x 10.6″, 35.3 lbs)
Heptode amps carry a 3 years limited warranty.
Videos
See also Leo ’64 demos (Jim ’81 “Leo” channel is identical to Leo ’64)
Audio demos
Audio demos by Cyril Simonnot, Gibson Les Paul* guitars, Heptode Jim ’81 amp, a bit of reverb.
All registered trademarks belong to their respective owners and are in no way associated with HEPTODE

