Slide Bass is all about power. Bass is all about definition, bass is all about control. The Two notes Le Bass is a tube preamp designed to bring those massive tones straight from your pedalboard. Le Bass has two independent channels (parallel or ‘jumped’) and with a packed feature set, your inner tone chaser will recognize le Bass as the perfect pedal board high voltage tube preamp to push your bass tone to the perfect place within the mix. Dual-channel tube preamp for your pedalboard The Perfect Bass Preamp LE BASS PRODUCT TOUR




Slide Channel A features deep dynamic bass with warm overtones and compression, giving that famous high-voltage thump you'd expect from a bass tube amp. Featuring bass and treble controls that are placed before the gain stages, allowing you to fine tune the tone before it hits the tube. 12 volts pedal on the outside
200 volts tube preamp on the inside
Switch it to Hot Fusion and you jump channel A into B. In this mode, channel A effectively becomes a boost pedal for B. Both channel's EQs cascade gives you a monster of a preamp for when you crave that fuzzy fat bass tone.  
Mix them together      
Two unique channels
with independent voicing and EQ
Channel B outputs a versatile modern overdrive, that can go as far as distortion, ranging from precise attack bite to full-range aggression. The three-band EQ (with sweepable mids) is placed after the gain stages for precise, responsive, tone shaping. Going direct from a pedalboard comes with the drawback of leaving all the tube warmth your amp brings, at home. The preamp section of the amp is critical for fully developing the identity of your tone.

The Two notes Le Bass is a tube pre-amp featuring our trademark True High Voltage design. At its heart is a JJ ECC 83 S preamp tube, running at 200 volts internally, which has been specifically chosen for this pedal.

The dynamics, headroom, warmth and that legendary response you'd expect from a vintage American bass amp is just there, right on your pedalboard - The perfect preamp for when you want to go direct. Also, of course, Le Bass can also work perfectly as a tube overdrive in front of, or in the loop of, your favorite amp.
HOT FUSION COLD FUSION MIX AND BALANCE CHANNELS A & B JUMPING FROM CHANNEL A TO CHANNEL B Hitting both channels at once will let you run channel A and B in parallel. This is the Cold Fusion mode. In this mode, you can balance the clean and distorted signals. Retain all the low-end roundness and musicality with hard hitting precise attacks.

Slide Le Bass features an analog cabinet simulation ideal to go direct from your pedalboard. The simulation is based on a Fridge (8x10) / Alu XL (4x10) DynIR with Cnd87 microphone. With great power comes great flexibility Plug your headphones straight to Le Bass and play your pedalboard silently thanks to the integrated analog cabinet simulation. The Two notes Le Bass is a dual-channel tube preamp designed for bass guitar. It features channel stacking 'fusion' functionality, MIDI connectivity, Headphones Out and FX Loop. More Two notes Preamps : LE BASS COMES WITH TORPEDO WALL OF SOUND HEADPHONES OUT ANALOG CAB SIM Thanks to Le Bass's powerful MIDI control, you can switch the Preamp channels and Fusion modes remotely or even control your other MIDI pedals from Le Bass footswitches. MIDI CONTROL Build a preamp-specific pedal chain by using Le Bass' FX Loop. Bypass the pedal to bypass the whole chain. The effects are applied before the analog cab sim. FX LOOP Experience the most authentic cab sims and power amp emulations when Le Bass is plugged in to a computer using the Torpedo Wall of Sound plug-in, complete with 16 free DynIR Virtual Cabinets. Want to have portable power amp and DynIR cabinet features on stage? Pair Le Bass with Torpedo C.A.B. M+ and have total control and sound quality - straight from your pedalboard. IT GETS EVEN BETTER WITH TORPEDO C.A.B. M+ LE CLEAN

Le Bass Preamp comes with a lifetime licence of Torpedo Wall of Sound, complete with an incredible selection of 16 DynIR cabinets. With a wide range of included effects, you can mix your Amp DIs to studio standards.

  • 2Notes CSB : Two Notes Custom 1×15″
  • Alu XL : Inspired by Hartke® XL 4×10″
  • AZ Ben : Inspired by SWR® Big Ben 1×18″
  • AZ Work : Inspired by SWR® WorkingMan 4×10″;
  • Calif Low : Inspired by Mesa/Boogie® 2×10″
  • Fridge : Inspired by Ampeg® 8×10″
  • Heaven Bot : Inspired by David Eden® 1×15″
  • Heaven Top : Inspired by David Eden® 1×10″
  • Marco : Inspired by Markbass® 2×10″
  • New York : Inspired by Markbass® 4×6″
  • Rea One : Inspired by AER® Cab One 2×10″; + 1×8″
  • Voice V125 : Inspired by Vox® V125 2×12″ (“Vox® 2×12″)
  • WgrandBlvd : Inspired by Ampeg® B15N 1×15” CB Jensen® C15N, Vintage Ceramic
  • Bull Neo2 : Inspired by Taurus® TN210 2×10″ with new generation neodymium drivers
  • Fridge 9 : Inspired by Ampeg® V.9 – 9×10″
  • Dual BW15 : Inspired by Peavey® 215D BW – Black Widow® speakers.


  • Four classic tube types : EL84, EL34, 6L6, KT88
  • Two circuit types : Class A (Single Ended) and Class A/B (Push-Pull)
  • Two tube modes : Pentode and Triode
  • Volume, Contour and Depth knobs


  • Sculpts the tone coming out of the Virtual Cabinet
  • Five customisable semi-parametric bands going from -20dB to +20dB (and a low-cut filter)


  • Dynamics and frequency shaping tool to beef up your tone
  • Low and High knobs for low-end and high-end emphasis


  • 8 legacy Room Ambience algorithms (Studio A & B, Loft, Cathedral, Basement, Hall A & B, Crypt)


  • Based on high-end studio rack compressors


  • Virtual Cabinets come with captures from 8 studio and live microphones (Dynamic, Condenser, Ribbon)
  • Dynamic IRs are phase-corrected, preventing any phase issue
  • Blend two microphones together
  • Have direct access to 400+ Virtual Cabinets via the DynIR Cabinet Collection


  • Distance : from close miking to room tone, seamlessly
  • Axis : from cone center to speaker shell, seamlessly
  • Front and back of the cabinet

Everything you need to know about the Preamp pedals. 
There is simply too much to write here about what sets these apart from the others. If you want to go full nerd, you can in this article.

What is “Fusion Mode”?
Fusion mode allows you to stack the two difference channels of the Preamps. You can find more about it in this article.

What’s the difference between Channel A and B?
With two very distinct voicings, it’s like having two very different preamps in one unit. You can find more out about the channels in this article.

Is it 100% analog?
Apart from a couple of internal microcontrollers that are not within the audio path, the Preamps are 100% analog.

Can I change the built-in cab sim? Can I load IRs?
The speaker sim within the Preamps are analog and are hardwired in. There are no Virtual Cabinets or IRs within the unit.

Preamp tube


Input / Output

Input :
1/4″ Jack unbalanced (TS) 1 MOhms impedance

Return* :
1/4″ Jack unbalanced (TS) 2.2 MOhms impedance
Max input level : 17dBu
*Unbuffered, directly connected to Output when active

Output :
1/4″ Jack unbalanced (TS) 300 Ohms impedance
Max output level : 11dBu

Thru* :
1/4″ Jack unbalanced (TS) 1 MOhms impedance
*Unbuffered, directly connected to Input

Send :
1/4″ Jack unbalanced (TS) 300 Ohms impedance
Max output level : 11dBu

DI Output :
XLR balanced 600 Ohms impedance
Max output level : 10dBu

Phones :
1/8″ Jack balanced (TRS)

Tone control 

Channel A :
Passive Bass / Treble tonestack

Channel B:
Passive Bass / Treble tonestack
Active Mid/Sweep control
Gain : -18 to +6 dB
Frequency : 300Hz to 1.5kHz


Power input connector:
DC connector, 2.1mm x 5.5mm, center negative

Supplied adapter:
100-240v AC to 12v DC 1A

Power consumption:
Approximately 6W

Current consumption:

Dimensions & weight

Width x Depth x Height*:
12.4cm x 18.9cm x 5cm – 4.9″ x 7.5″ x 2″
*Including connectors and knobs

Weight: 750 g / 1.65 lbs