Amps

Engl E658 Steve Morse Signature 20

A highly flexible tube amplifier with rich features, great build, and impressive clean tones, but a sound signature leaning toward the darker side.

★★★★★ 4.8/5 · 10 buyer reviews · 7 min read · updated 2026-10-07 · Tested by Cal Whitaker

Engl E658 Steve Morse Signature 20: Detailed Hands-On Test

The Engl E658 Steve Morse Signature 20 is a 20-watt dual channel tube amp head crafted in Germany. Presented in a compact black and blue chassis, the E658 is designed for versatile use and direct compatibility with modern setups, all with Steve Morse's sonic vision in mind. Let's break down its technical profile, sound qualities and daily handling, based strictly on provided specs and real user feedback.

Construction and Connectivity

This amp head weighs seven kilograms and measures 340 x 220 x 140 millimeters, easily fitting on a small cab or desktop. The enclosure feels solid, with a finish users describe as outstanding, competing with boutique models in build quality. All jacks use standard 1/4 inch connections except for the headphone out, which is 3.5 mm stereo.

  • Preamp: Four ECC83 tubes (known as 12AX7) in the preamp stage
  • Power section: Two EL84 tubes
  • Speaker outs: One speaker output for 8 to 16 Ohms, two for 16 Ohms
  • Effects loop: Dual 1/4 inch send/return
  • MIDI in, USB port for impulse response management, and balanced impulse response output
  • No included footswitch, but supports MIDI pedalboard control and clean/lead gain boost switching

Control Layout and Features

The E658 provides a comprehensive set of controls for tailoring the amp's behavior and sound:

  • Clean Gain and Lead Gain (separate per channel)
  • Bass, Middle, Treble EQ
  • Clean Presence (not global, but only for clean channel)
  • Lead Volume and global Master level
  • Built-in effects: reverb (spring-inspired), delay (with separate mix, time, feedback)
  • Noise gate (with threshold adjustment)
  • Headphone output volume (with selectable impulse responses for speaker cab emulation)
  • Switches for power (standby), channel select, gain boost, effects loop, noise gate, impulse response selection, phantom power and ground lift
  • Power scaling: selectable 20W, 5W, 1W, or speaker-off (silent recording/practice with headphones or direct outs)

The inclusion of MIDI addresses a frequent request among users, allowing full remote switching of presets and parameters with compatible controllers.

Sound and Tonal Character

Real-world user reports consistently praise how the E658 handles both clean and drive sounds. The clean channel is especially singled out for its clarity, harmonic complexity, and warm character, retaining transparency even with higher gain settings or humbucker pickups. Players frequently mention a "dark" or less trebly overall voicing compared to classic American or British tube amps (Fender/Vox/Marshall). This results in a forgiving high-end and more presence needed on the dial for some tastes. The ability to retain note separation and clean attack is highlighted, with long-time "digital" users remarking that these qualities are hard to replicate in amp modelers.

The lead channel demonstrates considerable versatility, spanning bluesy crunch, classic hard rock gain, and heavier tones. The noise gate is generally praised for effectiveness, keeping high-gain operation free from unwanted hum or hiss. Importantly, distortion tones can be achieved at moderate or even low output levels, which is critical for studio and home environments. Some users find maximum treble and presence insufficient for their specific needs, but EQ in the loop offers a workaround.

  • Clean channel: Very clear, slightly dark voicing, does not break up easily, good for delicate picking
  • Lead channel: Smooth gain, no fizz, classic hard rock to heavy styles, noise-free with gate active
  • Effects: Reverb and delay are usable, not boutique but practical for most musical contexts

Power Management and Adaptability

The selectable output wattage is a major asset, users report that the amp remains lively and tonally full even at 1W. The speaker-off mode and cab simulation (via impulse responses) are regarded as robust solutions for silent practice or direct recording, and the USB interface for loading custom impulse responses gives extensive flexibility. Multiple headphone and recording scenarios are easily accommodated with these features.

Use Case Scenarios

The E658 foregoes the "amp-in-a-room" simplicity for a much broader feature set. Bedroom practice, band rehearsal, recording and even gigging with cab or direct front-of-house setups are all possible. MIDI control and preset recall can streamline live sets or complex sound changes. While a footswitch is not included, use of a MIDI pedalboard enables deep control, users recommend this strongly for maximizing the amp's power.

Criticisms and Considerations

  • The single presence control only affects the clean channel; the lead channel relies on its own EQ structure, so some prefer independent presence control.
  • Some players report the amp's overall voicing as very dark, requiring external EQ for certain genres or personal tastes.
  • No footswitch in the box, MIDI pedalboards are nearly essential to exploit every routing and channel option live.

Summary

The Engl E658 Steve Morse Signature 20 is a sophisticated, modern tube amp built with flexibility and serious sound control in mind. Its robust MIDI, impulse response and output power options answer nearly every contemporary use case short of big-stage volumes. Players need to adjust to its darker fundamental voicing, but with tailored EQ and the right speaker or impulse response, nearly any tone from jazz cleans to '90s metal is achievable. Manufacturing and reliability equally impress, echoing Engl's established reputation.

At a retail price of 1258, the E658 delivers a unique value proposition for players who demand versatility, direct integration with digital rigs, and a musical approach that remains thoroughly tube-based. If you prize a full-featured amp that refuses to box you into one style, this signature model earns a close look.

Engl E658 Steve Morse Signature 20, front view
8.5/ 10 overall score
$1,258current price at the retailer
Check today's price price and delivery time at the retailer

Shipping and duties

The retailer ships from its warehouse in Germany. Prices are shown in US dollars and do not include import duties. Orders under roughly $800 usually clear US customs without duty; above that, a duty of a few percent may be collected on delivery. 30-day money-back and a 3-year warranty apply.

Scores by area

Where it shines, where it stumbles

What convinced me

  • Exceptionally versatile with numerous control options and built-in effects
  • Outstanding clean channel praised for clarity and noise-free operation
  • Power scaling allows genuine tube sound at low volumes, suitable for home use
  • USB, MIDI, and IR loader connectivity for modern integration
  • Top-tier build quality and appealing aesthetics

What bugged me

  • Overall tone is quite dark and lacks brightness for some tastes
  • Presence control only affects the clean channel (not lead), which limits tonal adjustment
  • No footswitch included, external MIDI pedal needed for full flexibility
  • Some effects, like reverb and delay, are adequate but not boutique level
  • Initial tube break-in required for optimal performance

Is it the right one for you?

Good pick if

Ideal for guitarists seeking comprehensive control over their sound, those who perform or record in various settings, and anyone after high-quality cleans and practical built-in effects. Also recommended for musicians relying on modern integration like MIDI and IR loading, or needing versatile power scaling.

Look elsewhere if

Not recommended for those seeking sparkling, bright treble or the classic Engl high-gain voice. Players unwilling to add external EQ or invest in a MIDI controller (not included) may find some operational aspects less convenient.
Progressive RockClassic rockFusionBluesMetal (90s and modern)

Suggested level: Intermediate

Engl E658 Steve Morse Signature 20, $1,258Check today's price →

Specifications

Power rating in w
20 W
Power amplifier tubes
EL84
Channels
2
Reverb
Yes
Footswitch
No

What other players say

Owners consistently highlight the amp's outstanding clean channel, highly flexible configuration, and effective integration of delay, reverb, and MIDI. Many cite the power scaling and robust build as major assets. Some note that the amp's sound is notably warm and dark, with limited presence and treble even at maximum settings, requiring additional EQ adjustments for certain styles. The lack of an included footswitch is a recurring mention, although MIDI compatibility is appreciated. Overall satisfaction is high among users seeking versatile tube tones for home and studio, while a minority reports wishing for a brighter overall tone.

5 ★
68%
4 ★
17%
3 ★
10%
2 ★
3%
1 ★
2%
Positive 72% Neutral 18% Negative 10%
Absolutely loving the options, there are so many, and everything makes sense and can be dialed to taste.
The clean channel is outstanding, with superb note separation and almost no noise.
The flexibility in power output makes it very living-room friendly; headphone output with selectable IRs works great.

Up close

Engl E658 Steve Morse Signature 20, detail 2Engl E658 Steve Morse Signature 20, detail 3Engl E658 Steve Morse Signature 20, detail 4Engl E658 Steve Morse Signature 20, detail 5

Watch and listen

Watch the video demo on YouTube →

Before you decide

Questions players ask

Does the Engl E658 require an external footswitch for channel switching and effects control?

Yes, to fully access channel switching and gain boost functions, an external footswitch or MIDI controller is required, as one is not included.

How does the amp perform at low volumes for home use?

Power scaling allows operation at 20 W, 5 W, or 1 W, making it very suitable for practicing at home or late-night use, all while retaining tube warmth.

Is the tone suitable for bright and sparkling genres?

The amp has a warm, darker character that excels in full-bodied cleans and thick overdrive, but those seeking a very bright, cutting treble may need additional EQ or look elsewhere.

Are the built-in effects like reverb and delay high-quality?

The onboard effects are practical and fully integrated but not at boutique standard. They are generally appreciated but may not satisfy users with demanding effect needs.

Can I integrate the amp easily with digital rigs and recording setups?

Yes, it offers USB connectivity for impulse response loading, a balanced IR output, and comprehensive MIDI for seamless studio or digital integration.

The last word from the bench

The Engl E658 Steve Morse Signature 20 offers an extensive palette of features and connectivity in a compact, robust package. Its clean channel stands out, delivering remarkable note separation and ultra-low noise. While enthusiastically praised for versatility and overall sound quality, its inherently dark voicing and limited presence adjustment might not suit everyone. Perfect for those seeking a premium, all-in-one tube platform for home, studio, or small gigs.

Engl E658 Steve Morse Signature 20, $1,258Check today's price →

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Engl E658 Steve Morse Signature 20

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