Quilter Superblock US Review: A Portable Powerhouse for Guitarists


In the ever-evolving world of guitar amplification, the Quilter Superblock US emerges as a notable contender, offering a myriad of features in a compact and lightweight package. Designed as a pedalboard transistor amplifier for electric guitars, this versatile device boasts three classic US amp voicings, ’60 Tweed, ’62 Blonde, and ’65 Black, along with a range of controls and functionalities. In this review, we will delve into the Superblock US’s features, design, performance, and practicality, analyzing its pros and cons to determine if it’s the right fit for guitarists seeking portability without compromising on sound quality.

Features and Design

The Quilter Superblock US impresses with its feature-rich design, combining the convenience of a pedalboard-style amplifier with the tones of three iconic US amplifiers. With its compact dimensions of 165 x 108 x 38.1 mm and feather-light weight of 0.610 kg, the Superblock US immediately stands out as an ideal companion for guitarists on the go. It packs a punch with a power output of 25 watts, comparable to a 25-watt tube amp when using the included PS-24 power supply, or it can operate in a low-power 1-watt mode with a conventional 9V power supply.

The controls on the Superblock US include Gain, Limiter, Bass, Mid, Treble, Reverb, and Master, allowing for precise sound shaping. The three voicings, ’60 Tweed, ’62 Blonde, and ’65 Black, deliver distinct tones reminiscent of their respective eras, adding a vintage flair to the modern technology. Additionally, the Cab Sim offers options for Brt (Bright), Norm (Normal), and FRFR (Full Range Flat Response) modes on the XLR and headphone outputs, catering to various performance and recording scenarios.

Furthermore, the Superblock US features an effect loop, which facilitates integrating external effects seamlessly into the signal chain. The inclusion of a limiter ensures a consistent and controlled output, preventing unwanted clipping and distortion during intense playing.


Our experience with the Quilter Superblock US left us genuinely impressed. The amp’s ability to faithfully reproduce the iconic US amp voicings adds a level of authenticity to our performances. Whether we were seeking the warm, tweedy tones of the ’60 Tweed, the smooth and balanced character of the ’62 Blonde, or the dynamic and responsive ’65 Black, the Superblock US delivered with remarkable accuracy.

The built-in reverb also deserves special mention, providing a lush and pleasing ambience that complemented our guitar tones exceptionally well. Moreover, the inclusion of cab sims further expanded the amp’s versatility, allowing us to easily connect to PA systems or headphones for silent practicing without sacrificing sound quality.

Pros and Cons

As with any product, the Quilter Superblock US has its strengths and areas for improvement. Let’s break down our observations:


  1. Portability: The Superblock US’s compact and lightweight design makes it a breeze to carry and set up for gigs or practice sessions.

  2. Powerful Output: Despite its size, the 25-watt power rating delivers a surprisingly loud and robust sound, providing ample headroom for various playing styles.

  3. Versatility: The multiple voicings, cab sims, and effect loop options offer a wide range of tonal possibilities, suitable for diverse musical genres.

  4. Great Reverb: The built-in reverb enhances the overall sound experience, adding depth and dimension to our playing.

  5. Excellent Line Out: The XLR line output with cab sim sounds exceptional, making it easy to connect to external audio systems for recording or performances.


  1. Separate Power Supply: The main power supply (PS-24) being a separate unit may pose some inconvenience for users, especially when dealing with multiple pieces of equipment.

  2. Build Quality: While the Superblock US remains a sturdy and well-built device, it may feel slightly more delicate compared to some other models in the Quilter lineup.

Is it right for you?

The Quilter Superblock US caters to a wide range of guitarists, from those seeking a portable practice solution to gigging musicians looking for an easily transportable yet powerful amplifier. If you value versatility, authentic US amp voicings, and the convenience of a pedalboard-style amp, the Superblock US is likely to meet your expectations.

With its ability to replace traditional tube amps in various scenarios, such as live performances with PA systems or direct recording, the Superblock US proves to be a valuable addition to any guitarist’s setup. However, if you prefer an all-in-one unit without the need for a separate power supply, you might consider other options in the Quilter range.


In conclusion, the Quilter Superblock US stands out as a commendable and innovative amplifier, combining cutting-edge technology with classic US amp voicings. Its compact size, light weight, and remarkable tonal accuracy make it an attractive choice for guitarists seeking a portable and versatile solution without sacrificing sound quality. The Superblock US’s ability to deliver the iconic tones of ’60 Tweed, ’62 Blonde, and ’65 Black in a pedalboard-style format is a testament to Quilter’s commitment to innovation and excellence in guitar amplification.

While the separate power supply and perceived build quality may be minor considerations, the Superblock US’s performance, features, and sonic capabilities make it a worthy investment for both professional musicians and hobbyists alike. Whether you’re practicing in your bedroom, recording in the studio, or performing on stage, the Quilter Superblock US is undoubtedly a powerhouse companion for any guitarist’s journey.

Similar Posts