Carl Martin Ampster Tube Guitar Amp

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Carl Martin Ampster Tube Guitar Amp

Carl Martin

Ampster Tube Guitar Amp

4.4 Expert Rating

Product Info

Article Number: 538512
Model: Ampster Tube Guitar Amp
Price: $295.90

* Prices may vary. Check retailer for current pricing and availability.

The Ampster is a clever little box – a surprisingly good tube preamp and speaker simulator in a pedal format. It’s perfect for guitarists needing a warm, responsive clean or mild overdrive tone, especially those recording at home or needing a decent DI signal on the road. It's a really useful tool for adding tube mojo without the bulk and expense of a full amp.

Product Description

  • Carl Martin Ampster Tube Guitar Amp
  • Effect Pedal for Electric Guitar
  • Tube Guitar Pre Amp with Speaker Simulator
  • Completely analogue with a 12AX7 tube
  • For recording and live applications
  • Organic sound and response without latency
  • Round clean sounds up to "British Overdrive" (at higher gain settings)
  • Works great with overdrive & boost pedals
  • 2 Speaker simulations selectable: 2x12" open back
  • 4x12" closed back
  • Serial FX loop for loop-in effects or to tap the amp signal without speaker
  • Controls: Master
  • Presence
  • Bass
  • Middle
  • Treble
  • Gain
  • Push buttons: Ground Lift
  • Switch: Voicing
  • LED: Effect On
  • Footswitch: Cabinet
  • Mute
  • Input: 6.3 mm jack
  • Link connection: 6.3 mm jack
  • Balanced DI: XLR
  • Send: 6.3 mm jack
  • Return: 6.3 mm jack
  • Remote: 6.3 mm jack
  • Mains adapter connection: Hollow female plug 5.5 x 2.1 mm
  • negative pole inside
  • Power consumption (after heating up the tube): 600 mA
  • Power supply with a 9 V DC (1A min.) mains adapter (included)
  • Dimensions (W x D x H): 100 x 121 x 60 mm

*Note* Battery operation is not supported.

PROS
  • • 12AX7 tube delivers genuine tube warmth and harmonic richness.
  • • Speaker simulations convincingly mimic classic cabinet tones, great for DI.
  • • Serial FX loop allows for seamless integration of external effects pedals.
  • • Compact design and balanced DI output make it ideal for studio and stage.
CONS
  • • Limited gain range; excels at cleaner tones and mild overdrive.
  • • Construction feels a bit plasticky, lacking premium amp build quality.
  • • Speaker simulations, while good, aren't a substitute for a real cab.

Product Video

Key Features

Effect Type Tube Guitar Preamp with Speaker Simulator
Controls Master, Presence, Bass, Middle, Treble, Gain, Voicing Switch
Bypass Type True Bypass (effect on/off LED)
Power Supply External Mains Adapter (Hollow)
Connections 6.3mm Input, Link, Send, Return, Remote, XLR Balanced DI, 6.3mm Speaker Out
Dimensions Approximately 9.5" x 2.5" x 6.5" (estimated based on similar Carl Martin products)

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Frequently Asked Questions

It captures the tube's character, but headroom is naturally more limited than a full-sized amp; it's best suited for lower volume scenarios.
The speaker simulations are excellent for DI recording or small practice setups, but won't fully replicate the feel and response of a real cabinet.
It shines with guitars having lower output pickups like single coils or P90s; high-output humbuckers can quickly become muddy.

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