Evh 5150 III 50 W 6L6 Head Stealth

Evh 5150 III 50 W 6L6 Head Stealth: Hands-On Test and Technical Review

The Evh 5150 III 50 W 6L6 Head Stealth is a modern all-tube amplifier head aiming at guitarists who demand versatility, ease of transport, and uncompromising "gain reserve." Combining 50 watts of tube power (two 6L6 output tubes and seven 12AX7 preamp valves), this head is a direct evolution of the legendary high-gain lineage, but with real-world flexibility and thoughtful engineering. I've spent significant time comparing the Stealth version to both the classic Peavey 5150/6505 and flagship high-gain competitors. Here's how this Evh delivers in the field.

Build, Layout, and Practical Details

• All-tube design: two 6L6 output tubes and seven 12AX7 preamp tubes (JJ ECC83S)
• Three independent channels, clean ("green"), crunch ("blue"), and lead ("red")
• Common EQ for clean/crunch, separate EQ for lead, global Presence and Resonance controls
• 50 watts power output, lightweight (11.4 kg), compact dimensions (21.6 x 50.8 x 29.4 cm)
• MIDI in, serial effects loop, two speaker outs with impedance select (4, 8, 16 ohms), headphone out
• No built-in reverb or noise gate; comes with a robust footswitch

Physically, the Stealth cuts bulk and weight compared to 100-watt heads, making it more manageable for rehearsals and regular gigging. The blacked-out look is striking. Control layout is logical, though some users find the rear power and standby switches less convenient than front-panel placement. Dual-concentric volume/gain pots are efficient but can feel cramped if you need on-the-fly adjustments.

Channel-by-Channel Sound Analysis

This is a high-headroom, crystal-clear platform with a response that's reminiscent of classic American amps, think bell-like, sparkling, neutral, undistorted. Even with the gain maxed out, breakup is minimal unless you push it with an overdrive pedal. The channel does demand external effects (compression, chorus, delay, or drive) to come alive for stage or studio work, but it is a genuine clean circuit, leagues above the old 5150/6505 offerings, which is a game changer for players who need undistorted chime or play in genres beyond just metal.

This is the star for many users: expressive, dynamic, and fiercely precise. There's heft and definition in palm mutes, snappy attack, and an overall tonality that walks between British and modern American schools depending on your mid and presence settings. The crunch channel remains ultra-tight, noise-free, and very responsive to your picking dynamics from classic rock and hard rock (gain around 3-4) to '80s metal and contemporary high-gain (gain above 5). For low-output pickups and Tube Screamer-style boosts, it morphs into a focused, Soldano-inspired high-gain beast with exceptional midrange cut and coherence. The EQ (bass, mid, treble) is especially responsive, letting you dial in scooped or mid-pushed tones without flub in the low end.

This mode delivers notorious amounts of gain, truly beyond what most amps can offer, due to seven gain stages in the preamp. At 3/10 on the gain knob, you're already at the saturation ceiling of most modern heads. This channel excels at compressed, modern rhythm work and infinite sustain for leads, without losing note clarity. However, at excessive settings, the output can become unruly and prone to background hiss, especially with high-output pickups or if you're stacking pedals. Some players tame this by swapping earlier preamp tubes for lower-gain variants (like 5751 or medium-gain 12AX7 types), which is straightforward and brings better control for nuanced lead tones. Still, the red channel remains the playground for shredding, extended-range guitarists, and anyone needing "over-the-top" gain on tap.

Live Usability and Studio Considerations

• The master volume is excellent, letting you retain core tone at low levels for home practice or crank loud for live use.
• Effects loop is strong, but some users report that it runs at higher levels (line level, +4 dB), so compatibility with your pedals or multi-effects might require adjustment to avoid noise or feedback. Long cable runs may amplify noise.
• MIDI switching works flawlessly for channel and loop control, ideal for programmable rigs and pedalboard-based workflows.
• The global Presence (front panel) and Resonance (rear) let you fine-tune the amp's aggression and bass weight to your speaker cab or venue, which is crucial for dialed palm mutes and overall punch.
• No integrated noise gate means most high-gain players will supplement with external gates in front and/or the effects loop for the cleanest possible signal.

The head is sensitive to guitar and pickup choice, lower output single coils yield classic, glassy cleans and open crunch, while active or high-output pickups push the blue and red channels into metal territory instantly. The absence of a built-in reverb is expected in this class, and not missed for most stage users.

Durability and Reliability

Construction is robust, and transport is worry-free. Some users have reported initial issues (like loud pops at shutdown, or loop-related noise) and recommend tube swaps for both tonal and reliability improvements. Factory tube choices are serviceable but can be upgraded for even punchier or smoother response. Outside of rare early failures, the amp stands up to regular gigging and heavy use. The external bias adjustment is a bonus for those who like to change tubes themselves without a trip to the tech.

Final Verdict

• High headroom clean, rich and adaptable crunch, massive and sculptable lead distortion
• Ideal for all shades of rock, metal, hard rock, and more experimental/progressive genres
• Responsive EQ, wide voicing palette, and strong projection even at low volumes
• Some practical annoyances (rear panel switches, dual-concentric pots, no noise gate) are outweighed by cutting-edge tone and versatility
• At the price point (around $1,333), it's among the best value high-gain heads, playable for home, studio, and stage alike

If you demand modern gain, tight low end, true clean, and pro-grade flexibility in a manageable package, the Evh 5150 III 50 W 6L6 Head Stealth is a first-call contender. Sonic versatility, technical refinement, and reliability, with the classic EVH attitude, make this a standout amplifier for demanding players.