The Koch Studiotone 40 XL Combo:

The Ultimate Multi-Channel Workhorse
Built to be the ultimate companion for all players, the 40 XL features three foot-switchable channels (Clean, Overdrive, and Overdrive Boost) alongside Mid-Shift and Bright voicing switches. From pristine, warm American cleans that stay crystal clear at high volumes to rich British crunch and modern, singing high-gain sustain, this amp adapts seamlessly to any musical genre.

The Smartest Tools on the Stage and in the Studio
True to the Studiotone heritage, the 40 XL comes packed with the same forward-thinking, utilitarian features that redefined the modern tube amp:

  1. Analog Recording Output: A direct-to-desk line out featuring authentic speaker-voicing and mic-placement simulation—giving you cranked-cabinet realism straight to the mixing console or DAW
  2. Built-in Power Soak & Speaker On/Off: Run the four EL84s hot for rich tube saturation, then silent-record or practice without waking the neighborhood.
  3. Comprehensive Routing: Fully equipped with a serial effects loop, short-scale spring reverb, headphone output, and multiple speaker jacks (4, 8, and 16 ohms) to drive external cabinets.


The Koch Studiotone 40 XL takes a timeless, legendary design and gives it the extra muscle required for the biggest stages and loudest sessions.

Legendary Innovation, Amplified

Take everything that made the Studiotone 20 an industry benchmark for two decades, double the power, and you get the Koch Studiotone 40 XL Combo. Engineered for players who love the clever architecture and boutique tone of the original Studiotone but need massive clean headroom and raw, stage-ready volume, the XL version delivers uncompromising performance without compromise.

Driven by a heavy-duty Class-A power section utilizing four EL84 power tubes, the Studiotone 40 XL pumps out a fierce 40 watts of pure analog power. Paired with our custom-voiced VG12-60 speaker, this added muscle translates into an incredibly tight low-end, towering dynamic headroom, and an authoritative sonic presence that effortlessly cuts through a loud live drummer on any stage.

TAKE A CLOSER LOOK

VG12 60 speaker

Voiced to perfection. The custom Koch VG12-60 speaker bridges the gap between classic American sparkle and rich British crunch, specifically engineered to maximize the Studiotone's EL84 tube dynamics.

TONE VOICING

The 2-way ‘Mid Shift’ allows you to boost the mid frequencies around 800 Hz, and the 3-way ‘Bright’ switch allows you to cut or boost the high frequencies for fine tuning the top end.

RECORDING / PA OUT

Launched over 20 years ago and still unmatched. The Studiotone's fully analog recording output features built-in speaker voicing and mic placement simulation, delivering timeless tube warmth directly to your tracks.

SPECIFICATIONS:

Amp configuration 

  1. Class-A design 3x 12AX7 Pre-amp tunes
  2. 4x EL84 Powertubes

The TONE

  1. ​3 channels (Clean, Overdrive & Overdrive boost) foot switchable
  • One set of passive bass-mid-treble tone controls
  • Two front-panel voicing switches
    (mid-shift 2 way, bright 3 way) for all channels

Connectivity and OUTPUT

  • Custom designed VG12-60 Koch 12" speaker
  • 4, 8, & 16 Ohm speaker outputs plus speaker on/off switch
  • Serial effects loop (10 dBV signal level)
  • Recording output with speaker simulation and 2 voicing filters
  • Direct outputs (non-filtered, clean channel & headphone)
  • Short scale three spring reverb tank

HARDWARE & HANDLING

​-Two button footswitch (included) with:
* Channel select
*  Gain Boost or Reverb on/off
(Selectable on back panel)​

COMBO DIMENSIONS & Weight

Dimensions 50cm w x 28cm d x 47cm h
  • Weight 22 kg