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Engl E840/50 Tube 2x50W Stereo Poweramp 

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The Engl 840 is one very impressive 2 x 50 watt tube power amp. If you like the rich harmonic tone of 5881 power amp tubes, the 840/50 should be your...Click To Read More About This Product

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2 x 50-watt tube power amp with MIDI switching.

The Engl 840 is one very impressive 2 x 50 watt tube power amp. If you like the rich harmonic tone of 5881 power amp tubes, the 840/50 should be your first choice. It delivers a perfect match of attack & power to give your rack system the headroom that is needed.

In addition to first-class tube tone, the Engl 840 Poweramp offers a number of practical features. Each of the two stereo channels features two volume and two presence controls (A and B), so you can dial in individual volume and presence settings. The A/B controls are switchable via an external footswitch or through MIDI commands via a MIDI switcher. Intelligent design features, superior craftsmanship, and quality components are what the Engl 840 is all about.

  • Two volume and two presence controls on each of two channels
  • Superior craftsmanship

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E840/50 Tube 2x50W Stereo Poweramp

  • Rated power: 2 x 50 watt
    Outlet each channel: 8 and 16 ohm

    Input level poweramp
    Gain (14) off: -5 dB max. 15 dB
    Gain (14) on: -20 dB max. 0 dB

    Input tube V1: ECC83/12AX7, selected
    Phase shift tube V2, V3: ECC83/12AX7
    Power tubes V4 to V7: 5881 (or 6L6GC), matched sets

    AC Mains: 230V, 100 and 120V
    External: 1,6 AM; 3,15 AM
    Internal: 1,6 AT; 3,15 AT
    Power Tube Fuses: 2 x 315 mAM

    Dimensions: 19", 2 rack spaces; depth: 300mm
    Weight: approx. 12 kg

Review Snapshot

by PowerReviews
EnglE840/50 Tube 2x50W Stereo Poweramp

(based on 4 reviews)

Ratings Distribution

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Reviewed by 4 customers

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(3 of 5 customers found this review helpful)


great power amp

By samoth

from philadelphia

Comments about Engl E840/50 Tube 2x50W Stereo Poweramp:

I have owned this power amp for 3 years now and have consistently been impressed. the sound quality is stelar and it fan cooling has kept it running reliably while racked. i primarily use it with the engl 580 midi pre amp (which is unreal) but even with inexpensive tec 21 pedals as a preamp this power amp delivers a whole host of tones with a great amount of harmonic content. i gave it 4.5 on features because i wish that it had depth control or better yet two of them, because the dual prescence controls combined with dual volume controls makes a world of difference in the tonal flexiability. i gave it a 4 for quality because my units left side eats power tubes rather quickly, 6 months with moderate use. i replaced the left side with el34 and had the appropriate modifications done and have not had a problem in a year and have a richer and even more complex tone. i would have given this power amp 5 for value except that i was frustrated by what ever fault caused the left side to eat tubes so quickly. in the end the sound of this power amp melted and thus replaced my mesa dual, peavey jsx, and a marshal jcm900. even when i loan my preamp out for people to record with the tone they get slaving their head's power amp from my 580 pre comes off lacking without the use of this power amp

(3 of 3 customers found this review helpful)


Buy It And Be Done!

By The Redge

from Northern Colorado

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Comments about Engl E840/50 Tube 2x50W Stereo Poweramp:

This power amp makes EVERYTHING sound better. It's built like a tank and should easily outlive you. I use it with my Fractal Axe FX. It is THE magic ingredient that makes my AXE FX sound as good as any tube amp made. Just buy it and get it over with. You'll never regret this purchase. Push the GAIN button and you have more headroom and volume than you could ever use. This is a great product - worth every dime.

(2 of 2 customers found this review helpful)


A Great Power Amp For Guitar!


from Undisclosed

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Comments about Engl E840/50 Tube 2x50W Stereo Poweramp:

Lots of pluses with this amp, the dual volume / presence controls per channel for lead / rhythem switching works great! Plenty of power to keep up with most situations. Look-wise, it has a cool red glow from LED's inside that lights up the face grill! Solid and not too deep like other power amps, only about 11 1/2" deep racked! The price is high, but I feel it was worth it. You can spend a lot of time screwing around with low cost amps and crappy sound or just bite the bullet and get something you will have for a very long time.

(1 of 1 customers found this review helpful)


Great tube power amp!!!!

By Krikket

from Deerfield, IL

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  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful


  • None

Best Uses

    Comments about Engl E840/50 Tube 2x50W Stereo Poweramp:

    I've owned this power amp for about 2 years now and I must say I am still geeked! I've been using solid state amplifiers and multi-effects processors to get my sound for almost 10 years. While I loved the versatility of rack gear, I just couldn't justify having to use a head AND a rack...until this!! I use this power amp with an Engl e530 preamp and a digitech 1101 effects processor and the tone is incredible!! So much warmth and character! The dual switchable volume settings and presence settings allow you to be more versatile.

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