Harley Benton ST-20HH Active SBK DNAFX Amp20

Harley Benton ST-20HH Active SBK DNAFX Amp20 review

The Harley Benton ST-20HH Active SBK DNAFX Amp20 is a guitar and amplifier package built around an ST-style electric guitar and a compact modeling amp. The listed price is 235, and the product has been available since August 2025. Its specifications describe a practical starter or home setup, with a guitar, amplifier, strap, cable and case or gig bag included. No customer reviews are available, so this assessment is based on the supplied specifications rather than reported playing experience.

Guitar design and electronics

The guitar has a poplar body, a maple bolt-on neck and a Roseacer fingerboard with dot inlays. Its matte black finish and black hardware give it a uniform dark appearance. The neck uses a Modern C profile, with a 42 mm nut width and a 305 mm fingerboard radius. The 648 mm scale is a standard full-length guitar scale. There are 22 frets and a dual-action truss rod for neck adjustment.

Two active High Gain HBZ humbuckers provide the pickup system. The controls are limited to a master volume and a three-way pickup selector, which keeps the stated control layout straightforward. The hardtail bridge has no tremolo, so the setup avoids a moving bridge mechanism. Die-cast tuning machines and.010 to.046 strings complete the listed hardware and string setup. The specifications do not state the pickup wiring options, onboard battery type, or individual pickup output, so those details cannot be assessed here.

DNAFX Amp20 features

The included amplifier is rated at 20 watts RMS, with a 50-watt peak rating, and uses a Class D power amplifier with one custom eight-inch full-range speaker. Its eight amp models cover Clean, Country, Blues, Rock, Lead, Brown, Ultra and Metal sounds. Six programmable user presets let the player save settings, and an optional compatible footswitch can switch between those presets. The footswitch is not included.

Drive and master volume controls sit alongside a three-band equalizer for bass, midrange and treble. Digital signal processing provides flanger, phaser, tremolo and chorus modulation, plus spring, delay, combined delay and reverb, and reverb options. The effects have adjustable parameters. A tap-tempo function is provided for delay effects. Reverb is therefore part of a broader effects section rather than a single fixed setting.

A digital chromatic tuner uses a multicolored LED display. Bluetooth audio reception allows backing tracks to be played from an external source, while the 3.5 mm line input offers a wired alternative. The stereo headphone output also uses a 3.5 mm connector, useful for quiet practice with compatible headphones. The instrument connects through a standard 6.3 mm jack. These connections make the amp suitable for several basic practice arrangements, though the supplied data does not specify recording outputs or a dedicated computer interface.

Included accessories and practical details

The package listing includes a case or gig bag, a strap and a cable, but no picks, tuner or instructional book. Since the amplifier has its own digital tuner, the absence of a separate tuner does not leave the stated bundle without a tuning feature. The bag's listed interior dimensions are approximately 105 by 35 by 8 cm, with an accessory pocket. Its adjustable strap length is about 80 to 139 cm, and it has reinforced leather ends.

The included cable is three meters long, has 6.3 mm mono plugs at both ends, and is listed as 0.22 mm², or AWG 24, with a 6 mm outer diameter. The amp measures 343 by 315 by 200 mm and weighs 6 kg. Its power input accepts 100 to 240 V AC at 50 or 60 Hz. These figures describe a small-format combo that can be moved without the weight of a larger cabinet.

Assessment

The bundle's strongest measurable point is its breadth of included practice features. The guitar has active humbuckers and a fixed bridge, while the amp supplies multiple modeled tones, adjustable effects, presets, Bluetooth playback, a tuner and headphone monitoring. The included bag, strap and cable reduce the number of basic items a buyer needs to source separately.

There are limits to what the specifications establish. They do not identify the amp models' editing depth, preset storage workflow, cabinet construction, or the guitar's setup and action out of the box. The 20-watt RMS rating and eight-inch speaker define the hardware, but do not by themselves establish how loud or suitable it will be for a particular room or ensemble. With no customer feedback provided, the ST-20HH Active SBK DNAFX Amp20 is best judged as a feature-rich guitar and practice-amp package on paper, with real-world performance still requiring a hands-on check.