633 Engineering

Dragonfly & Dragonfly RT 1x10 combos

Now well known as one of the UK’s top boutique amplification brands, 633 Engineering is headed up by designer Cliff Brown, whose extraordinary bespoke heads and combos have gained approval from many top players in the UK and around the world, including Ash Wilson, Stuart Dixon, Micky Moody and blues maestro Kirk Fletcher to name but a few. Despite the pandemic pausing live music, 633’s popularity is as strong as ever, with an increased interest in products for home use and recording. Following regular enquiries for a smaller amp, Cliff has responded to popular demand with the highly anticipated and relatively affordable Dragonfly and Dragonfly RT, two single-ended, pure Class A designs with some typical 633 tricks up their sleeves.

While the Dragonfly amps cost considerably less than a bespoke 633 head or combo, there’s been no skimping on materials or build quality. The open-back cabinets are precision machined from birch ply, hand-assembled and finished to the high standards we’ve come to expect. There are no woodscrews; everything is bolted together with stainless steel fixings and neatly covered in heavy duty vinyl.

Behind the Dragonfly’s attractive ‘TV’style front, there’s a 10-inch Celestion VT Jr attached to a separate baffle. The Dragonfly chassis is folded from generously thick aluminium, which is an ideal material, combining low weight with superior screening and heat transfer characteristics. The amps use a toroidal mains transformer to minimise hum pickup, and a generously sized