NJD vs Benidub vs RDH: which dub siren to choose in 2026?

Are you hesitating between a vintage NJD, a new Benidub and an artisanal RDH? These are the three names that come up systematically when you’re looking for a real hardware dub siren, and they embody three very distinct philosophies: English legend, Italian modernity and old-fashioned craftsmanship.

This comparison gives you the sonic character, strengths and limitations of each brand, with a clear verdict depending on your use.

Why these three brands in particular?

The dub siren market is small and fragmented: dozens of craftsmen produce by hand, in very small series, all over Europe. But when you ask an experienced sound systemer what the references are, three names almost always come up.

• NJD Electronics (UK) – the historic brand associated with the heyday of British sound systems in the 80s and 90s.
• Benidub (Italy) – the modern standard available for new purchases, the default choice of many recent sound systems.
• RDH Electronics – a traditional manufacturer renowned for its sound quality and finish.

Other names are worth mentioning (Klementz, Zongo, Mr Law, Supa Mana, Rigsmith) – we’ll mention them at the end of the article – but the NJD/Benidub/RDH triangle covers 80% of purchasing questions.

NJD: the English legend

The spirit

NJD Electronics is a British manufacturer known for its sound system effects units, including the famous SE10 and its variants. These analogue dub sirens, produced since the 80s, have accompanied a large number of UK roots sound systems and continue to be sought after by purists.

Sound character

Pure analogue character. NJDs have a round, organic, slightly dirty sound, with a pitch range that falls well into the low end – useful for heavy sirens that interact with bass. The LFO is slow enough for spatial sweeps and fast enough for aggressive effects.

Strengths

• Unquestionable cultural legitimacy
• Warm, sought-after analogue sound
• Solid construction designed for the stage
• Highly rated on the second-hand market (so easy to resell)

Weaknesses

• Hardly any new models available: you have to hunt for second-hand ones
• Prices rise with rarity (€300-800 for a SE10 in good condition, sometimes more)
• Few modern features (no integrated delay on original models)
• No official maintenance support

Who’s it for?

Sound systemers attached to vintage sound, collectors, and anyone who wants the real thing and is willing to pay for it. Avoid if you want a unit that works straight away, without hunting on forums and eBay for three months.

Benidub: Italian modernity

The spirit

Benidub is an Italian manufacturer specialising in reggae/dub sound system equipment: preamps, crossovers, equalisers and, of course, dub sirens. Their approach is resolutely modern and professional – mass production, distribution through Thomann and other retailers, available technical support.

Flagship models

• DS01: the entry-level dub siren, two voices, built-in delay, sober design. Ideal for those who want a good new dub siren without the complexity.
• DS71: the more advanced model, with more parameters, better-quality analogue delay and a much richer sound. Often considered the best compromise on the market today.

Sound character

Cleaner and more modern than the NJDs. The Benidub has a present analogue grain, but with greater definition and a delay that blends well with the siren. The sound is less ‘vintage’ but still perfectly credible in a sound system.

Strengths

• Immediate new availability
• Manufacturer’s warranty and support
• Good quality integrated analogue delay (especially DS71)
• Neat construction
• Good value for money

Weaknesses

• Less of a cult in Anglo-Saxon sound system culture
• The DS01 delay is more basic than that of the DS71
• Less easy to sell than the NJDs (but not catastrophic)

Who’s it for?

The intelligent default choice. If you want a dub siren that works, new, guaranteed, with a convincing sound character, go to Benidub. The DS71 is probably the best new dub siren available today at a reasonable price.

RDH Electronics: the demanding craftsman

The spirit

RDH has positioned itself as a top-of-the-range craftsman: very small production runs, meticulous finishing and attention to sonic detail. Less industrial than Benidub, more contemporary than NJD.

Sound character

Depending on the model, RDH offers sirens with a dense, distinctive sound, often with a very organic analogue delay. Fans appreciate a distinctive grain that distinguishes them from both NJD and Benidub – more fleshy, sometimes more raw.

Strengths

• Quality craftsmanship
• Distinctive sound character
• Small production runs = valuable rarity

Weaknesses

• Variable availability depending on current production
• Prices often high
• Less documented than NJD (historical) or Benidub (commercial)
• After-sales service more dependent on direct contact with the manufacturer

Who is it for?

Sound system owners who already have an entry-level dub siren, who know what they want in terms of sound colour, and who want something exceptional rather than a generic instrument.

Synthetic comparison

Verdict by profile

You’re getting into sound systems → Benidub DS01 or DS71. The DS71 if the budget allows. You’ll have a functional instrument straight away, without treasure hunting.

You’re already equipped and looking for THE siren → NJD vintage if you find a good second-hand one at a decent price, RDH if you want something contemporary and distinctive.

You produce more in the studio than you play live → Benidub, the versatility/price ratio is unbeatable. Or directly a VST, see our article on dub siren plugins.

You want to invest in something with collector’s value → NJD, full stop. The value is only going up.

You’re on a tight budget → The second-hand market. Second-hand Benidubs go down to around €250-300, honest NJDs start at around €350-400. See our guide to buying second-hand.

What about other brands?

The NJD/Benidub/RDH triangle doesn’t exhaust the market. You’ll also come across :

• Klementz – a craftsman renowned for his distinctive-sounding units
• Zongo – its Zongo Dub Siren has a loyal following, with a singular design
• Mr Law – very limited production, collector’s profile
• Supa Mana – small production runs, sought after by sound systems
• Rigsmith (NS1) – raw character, sometimes rustic finishes, but a sound that gets through
• Elettrorama (Italy) – synthesizers with dub siren mode

If you get the chance to try one out or buy one at a good price, don’t close the door: these craftsmen sometimes work wonders. But for a first purchase, stick with the three big names.

Where to buy?

• Benidub: Thomann, the Benidub website directly, some specialist sound system retailers.
• NJD: Reverb, eBay, Audiofanzine, sound system forums, specialist Facebook groups. Avoid Le Bon Coin for this type of equipment (little presence and little expertise).
• RDH: order direct from the manufacturer, sometimes from certain partner dealers.

For second-hand purchases, take the time to read our practical guide to buying a second-hand dub siren without getting ripped off.

In a nutshell

There’s no wrong answer between these three brands – just different philosophies. Benidub if you want modern available, NJD if you’re after authentic vintage, RDH if you want artisanal character. In all cases, you end up with a real dub siren, not a gadget.

And if buying one seems premature, start with a free VST plugin to get the hang of it before you invest.

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