Koch Amps Studiotone 20 Combo

Guitar Combo AmpThe amps of the Dutch company Koch are no longer an insider tip. Nice tube sound, at the same time flexible and settled in a fair price class - these are the most important infos in advance. The studiotone combo could attract all guitarists who want to use the warmth and distortion of a power amplifier at tolerable volumes. On the other hand, this amp with its 20 W also has clean reserves, which should be sufficient in most cases.

Which brings us to the clean channel, which has quite Fender-like qualities: You can choose from fat to sparkling sounds here, with 2 voicing switches (2x for mid, 3x for treble), which effectively modify the sound. The overdrive channel on the other hand really takes off - strong, warm tube sound located between the rough British and settled American sound. The gain will be enough for most people. The Overdrive Boost channel, boosts the same sound even stronger and thus also hi-gain applications are covered. The 3 sounds share one equalizer - in the studio no problem anyway. But also for live applications it is no problem, because the gain staging between clean and overdrive is already set.

The 12" VG12 Koch loudspeaker installed here is built in cooperation with Jensen and it fits perfectly to this small power cube. A highlight not only in the studio, but also when you have a quite delicate situation with the volume live: A recording-out with two simulated speaker types and microphone positions is located at the back. If you have to play silently, one can switch on the power soak and send the signal directly to the mixer - completely without any noise. Excellent tube sound with many useful features - not just for the studio!

  • Power: 20W
  • Equipped with: 1x 12" VG12-60 Koch loudspeaker
  • 3 Channels: Clean, overdrive, overdrive boost
  • Class A
  • Tubes: 2x EL 84
  • Passive bass - mid - treble equalizers
  • 2 Vocing switches: Mid shift (2-way), bright (3-way)
  • Separate loudspeaker outputs: 4, 8, 16 ohm
  • Speaker on/ off switch
  • Recording output
  • Effect loop
  • Reverb
  • Headphone output
  • Dimensions: 45 x 24 x 44 cm
  • Weight: 17.5 kg
  • Incl. FS2-ST foot switch
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Further Information

Power 20 W
Speaker size 1x 12"
Power Amp Tubes EL84
Channels 3
Reverb Yes
External FX Loop Yes
Recording Output Yes
MIDI Interface No
Connection for External Speaker Yes
Headphone connection Yes
Footswitch Yes
Incl. Footswitch Yes
Weight 15,0 kg

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4.7 / 5.0
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The small sound machine, super alternative

Oli F., 23.12.2011
For 16 years, I have been the proud owner of a Boogie Mark IV and have played countless studio and livejobs in these years as a professional musician with Les Paul and Strat. But - especially in the live situation, one is too loud with the boogie, in small clubs anyway. The Boogie is simply not quietly playable, also not in the Tweed power mode. And the other drawback of this really horny amp: It weighs 45 kilos. So now we come to the real hero of this report, the cook Studiotone.

It is easy to carry and basically has the same features as the Mark IV, ie three channels, whereby one would rather say two and a half channels, since the Overdrive plus can only be adjusted in intensity or can be changed with a toggle switch - HLM - for high Gain, mid gain and low gain.

So if you play on Channel 2, the Overdrive Channel, you can use the included footswitch to switch the Overdrive Plus as a kind of booster, the signal becomes louder and more intense - in most cases for the solo.

The clean channel is clean for a long time, starting from approx. Half Potiweg begins, depending on the guitar, also a slight strain. But you do not really need it, there is the Overdrive channel.

The footswitch has two pushbuttons, which can easily crack easily but is ok The left pushbutton selects either the clean or the overdrive channel, the right switches from Overdrive to Overdrive Plus. So if you want to go from clean to Overdrive plus I have to press twice, first left then right. This is easily cumbersome, you have to internalize.
A pity I also find that for the Overdrive plus only the mentioned toggle switches and no separate volume regulator.

The sound control is simple, but effective and always affects all channels - bass, mid, treble. In addition, there is a mid switch of the 800 Hz or 2000 Hz featured. And a bright switch of highs raises, neutral holds or lowers. These two switches are great for the tonal correction of Les Paul and Strat.

The quality of the reverb is rather average.
Nice is the output section on the back, you have in the Line Out section different speakers and microphone setting modes. Thus, if you want to do without the "right" microphone pickup, you can choose its sound in the line out for the FOH mixer.
The line out section is a little bit heavy, for my taste sounds a SM 57 or similar. The front is still better, but it is always practical.

It is also possible to switch off the speaker, there is also a headphone input. The standby switch cracks occasionally. Effect loop is also available.
As a resume, I can not praise the amp high enough, it sounds gigantic, especially also quiet and yet with a super distortion. The weight is a huge plus. The handling is conceivably simple, you can also find on a dark stage the right potis, all of which run excellently.

The price is ok, that I had to order the protective sleeve for EUR 45.00 separately, I find a pity, but what solls. The super-processed cook is a prima little sound machine and for me a real alternative to my Boliden Mark IV, which I will continue to use with large things. The cook is the amp for studio, living room and small stages.
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Dominique384, 17.01.2012
I bought this amp at Thomann a few years ago. This is a Class A amp all-tube 15-kg and 20-watt equipped with a 12-inch HP. It has 3 channels with only one equalization: clean, overdrive and overdrive +. To this are added a series of switches that allow to really modify the sound: on the level of overdrive first but also on the tone. Everything is possible and the settings are really effective. It is equipped with a pedalboard allowing to change channels to the foot. The spring reverb is in my opinion below the rest and I use it very little.

I play with various types of guitar (Fender strat, the paul Indie designer - a guitar with extraordinary value for money and Cort M Custom). All sound beautifully on this amp with a special mention for the Les Paul.

I inserted a TC Electronics Nova System into the effect loop and the result is just great. This amp is particularly suited to jazz, blues and funk.

In addition to all qualities the strong point lies in the rear connectors. We can connect additional HP, we find an output recording, we can cut the HP, there is also an output to the clear channel of another amp.

Anything is possible.

I mainly use two configurations. The first is to cut the HP and go through the recording output on small monitoring speakers. I can play low volume with a remarkable sound.

To play in a group I plug the output to clear channel on a power engine 60 from Tech 21 and the sound becomes huge and aerial without the need to play at high volume (which I do not like).

To sum up I will say that this amp is a real Swiss knife with a quality at the top. I will not change it for anything in the world.
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985 €
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In stock within 5-6 weeks
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Offers include 24% Greek VAT and are valid as long as stocks last. Shipping costs to Greece are 20 EUR, free shipping on orders above 298 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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