Fromel Electronics · Lotus 60 W and 120 W
Lotus M3
The Lotus, upgraded. A passive reactive attenuator for tube amps.
Pre-order price until December 1
60 W $329 $349 from Dec 2
120 W $429 $449 from Dec 2
Pay now, get it before the holidays. Shipping is estimated to begin the last week of November. Price includes shipping in the US. 14-day refund, no questions asked. 1-year warranty. 2, 4, 8 and 16 Ω.
Pre-order now Pre-order price ends midnight Pacific, December 1, 2026.
- Starts at −3.5 dB. The M2's first step was −7. With a 60 W amp, the lightest setting leaves about 27 W.
- Steps of 1.75 dB. Eighteen levels, from −3.5 to −33.25 dB.
- Greatly improved cooling. A 92 mm Thermalright fan, where the M2 had 40 mm.
- Optional external power for the fan. It runs off your amp's own signal; plug an adapter into the EXT Power jack if you'd rather.
Front panel
Flip the toggles as you would on the unit: a stage is in with its lever down. The first stage on the right sets 3½ (up) or 7 (down). At 3½ only the 1¾ stage counts; the others still flip and take effect when the first stage goes to 7.
−3½ dB
at the speaker
- 3½
- 5¼
- 7
- 8¾
- 10½
- 12¼
- 14
- 15¾
- 17½
- 19¼
- 21
- 22¾
- 24½
- 26¼
- 28
- 29¾
- 31½
- 33¼
Inside
Six layers
Array, control board, fan, panels, shell, lid. Build it one layer at a time, from the resistor array up to the lid.
- The settings
All 18 settings, in dB and in watts.
- The back panel
Jacks, bypass and power, one by one.
- Inside
Six layers and views of the unit.
- Stage values
Values for 2, 4, 8 and 16 Ω loads.
- Lineage
Aiken, JohnH, the M2, the M3.