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Average Price: $2,499

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$300

$701+

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Based on price data from 1 merchant for "Dr. Z MAZ 18 Junior NR MKII 18-Watt 1x12" Studio Guitar Combo". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Combining American clean tones with the characteristic chime of overdriven British amps, the Dr. Z MAZ 18 Junior NR MKII 18-Watt 1x12" Studio Guitar Combo is a sonic powerhouse crafted for both stage and studio use. This amp's heart is a combination of a quartet of 12AX7 preamp tubes and a pair of 6N14N power tubes, delivering a versatile rock 'n' roll sound palette. What sets this amp apart is its master volume placement post-phase inverter, ensuring you get rich tube-driven tones even at low volumes, making it perfect for home practice without sacrificing sound quality.

Seamlessly integrate your pedalboard with the buffered effects loop, ensuring your effects sound as intended. The tube rectifier, a 5AR4, adds a vintage touch, providing a natural response that amplifies your playing dynamics, allowing the amp to react organically to your strumming intensity. Whether you're playing clean, adding a touch of reverb, or kicking into overdrive, the MAZ 18 Junior promises rich and responsive sound.

Its EQ-bypass footswitch offers an instant tone boost, pushing your sound over the top when you need that extra edge. With outputs for 4-, 8-, and 16-ohm speaker cabinets, this combo amp ensures compatibility with a range of setups, making it a flexible addition to any musician's gear.

Key Features:

  • 18-watt tube combo amplifier with a 12" speaker
  • Master volume post-phase inverter for optimal low-volume tube tone
  • Controls for Volume, Treble, Mid, Bass, Cut, and Master Volume
  • Buffered effects loop for seamless pedal integration
  • EQ bypass boost footswitch included
  • Outputs for 4-, 8-, and 16-ohm speaker cabinets

Product specs

Type Tube
Number of Channels Single
Output Power 18W
Speaker Size 1 x 12" Celestion G12H Anniversary
Preamp Tubes 3 x 12AX7
Power Tubes 2 x 6N14N (EL84 power), 1 x 5AR4 (rectifier)
EQ 3-band EQ, Cut
Inputs 2 x 1/4" (Hi/Lo)
Outputs 3 x 1/4" (4/8/16 ohms, 8 ohm internal)
Effects Loop Yes
Footswitch I/O 1 x 1/4" (EQ bypass boost)
Footswitch Included Yes, 1-button footswitch with variable level control
Bias Type Cathode Biased
Features Cathode biased
Construction Material Italian Poplar Cabinet
Power Source Standard IEC AC cable
Height 20.12"
Width 22.5"
Depth 10"
Weight 40 lbs.

FAQs

What kind of tones can I expect from the Dr. Z MAZ 18 Junior NR MKII for blues and rock music?

The Dr. Z MAZ 18 Junior NR MKII delivers rich, dynamic tones with a strong midrange, making it ideal for blues and rock. Its 18-watt tube design provides warm cleans and creamy overdrive, perfect for expressive playing styles.

Is the Dr. Z MAZ 18 Junior NR MKII loud enough for gigging with a band?

Yes, the 18-watt output of the Dr. Z MAZ 18 Junior NR MKII is powerful enough for small to medium-sized gigs, especially when mic'd. It offers great projection and clarity through its 1x12" Celestion G12H Anniversary speaker.

Does the Dr. Z MAZ 18 Junior NR MKII take pedals well?

The Dr. Z MAZ 18 Junior NR MKII handles pedals exceptionally well, thanks to its tube-driven effects loop. This allows for seamless integration of effects pedals without compromising the amp's natural tone.

What is the construction material of the Dr. Z MAZ 18 Junior NR MKII cabinet?

The cabinet of the Dr. Z MAZ 18 Junior NR MKII is made from Italian Poplar, which contributes to its lightweight design and enhances resonance and tone quality.

Does the Dr. Z MAZ 18 Junior NR MKII include a footswitch?

Yes, the Dr. Z MAZ 18 Junior NR MKII comes with a 1-button footswitch that includes a variable level control for EQ bypass boost, allowing for dynamic tonal adjustments during performances.

Dr Z Amplification

Dr Z Amplification

Dr. Z MAZ 18 Mk.II Official Demo with Dave Baker

Video thumbnail for Dr. Z MAZ 18 Mk.II Official Demo with Dave Baker by Dr Z Amplification

Dr. Z MAZ 18 Mk.II Official Demo with Dave Baker

Dr Z Amplification

Dr Z Amplification

Video thumbnail for Dr. Z AMA: "Old MAZ 18 Vs. New MAZ 18 Mk. II" by Dr Z Amplification

Dr. Z AMA: "Old MAZ 18 Vs. New MAZ 18 Mk. II"

Dr Z Amplification

Dr Z Amplification

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Dr. Z MAZ 18 Junior NR MKII 18-Watt 1x12" Studio Guitar Combo.

Features and functionality

  • The amp's high input provides a 3dB boost for lower output pickups, while the low input accommodates high output pickups, allowing for internal switching via a foot switch for boosting.

    Source
  • The built-in tone bypass feature can be controlled via a proprietary foot switch with a variable level, offering a significant clean boost without additional pedals.

    Source
  • The Celestion Creamback is highlighted as a higher-wattage version of the Greenback, providing a classic tone without the risk of speaker burnout in a Maz 18 setup.

    Source

Mods and upgrades

  • Dr. Z offers a mod to add a post-phase inverter master volume to older models, enhancing control over the amp's output for $259.

    Source
  • A recommendation for the Eminence Swamp Thang suggests it as a darker alternative to Celestion speakers, offering a chunky sound ideal for the Dr. Z Maz 18.

    Source

User experience

  • Owners appreciate the amp's versatility, noting its ability to serve as an excellent pedal platform and its suitability for a stereo or wet/dry setup.

    Source
  • Several find Celestions too bright, noting that Eminence options like the Swamp Thang/Texas Heat combo deliver the desired tone for metal or blues-rock.

    Source

Comparisons

  • A user found the G12H30 speaker surprisingly favorable despite typically preferring Greenbacks, highlighting the speaker's synergy with the amp.

    Source
  • The Celestion Gold is described as bright and "Voxy," while Eminence speakers like the Swamp Thang provide a darker, softer tone, suitable for blues and classic rock styles.

    Source
  • The Ragin' Cajun from Eminence is favored over Celestion for its darker tone, avoiding the harshness and high-end sometimes associated with Celestion models.

    Source

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