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• Review

Whoever or whatever you blame for it, the worst recession in post-war history has generally not been good news for British manufacturing. Yet sales of guitars and amps continue to be strong, thanks to a number of positive factors including, ironically, a certain plastic guitar-based computer game.

Perhaps now is as good a time as any for the debut of Blackstar's long-awaited Series 1 range. It's only been around two years since its first products hit the shelves, yet Blackstar is already seen as one of the UK's (and therefore one of the world's) top amp builders. However, it isn't just down to having good products and snappy marketing – an amp can have all the right features and styling, but within 10 seconds of plugging in, it will either connect with what makes you want to play music or it won't. So, after the long wait, do the Series 1 amps have that indefinable 'I want' magic? Let's find out.

The Series 1 range launches with three products: a 45-watt 2 x 12 combo, a 100-watt head and the KT88-powered flagship 200-watt head. We certainly like the attention to detail that's evident in the appearance of all three amps. The cabinets are built to a very respectable standard, with super clean woodwork matched by flawless vinyl covering and sharp control panel graphics. No question about it, this trio certainly looks the part.

Inside the chassis it's much the same story, with typically neat and robust PCB construction. There are boards for the front and rear panels, with three larger ones handling the power supply and main preamp components, all supported properly on robust metal standoffs. The valve bases are all PCB-mounted, which is fine – the only practical drawback is that preamp valve replacement is trickier, as they're quite deeply recessed into the chassis.

These aren't simple amps, so those PCBs are stuffed full of components, with several bundles of interconnecting wires all neatly terminated in plugs and sockets. The chassis are tough steel boxes and need to be, as all three amps have substantial transformers.

Those on the S1-200 are seriously heavy lumps of iron, which are close to being the biggest we've seen on any guitar amp. This is good news for longterm reliability, though not portability – both transformers are at one end of the chassis, balancing the S1-200 very poorly on its single carry handle. Not so clever given that this head outweighs many 2 x 12 combos. It really needs a pair of grabs at each end of the cabinet so it can be carried easily and safely.

Next to the conventional bass, mid and treble controls is Blackstar's now-familiar Infinite Shape Factor (ISF). Put simply, this knob changes a classic British EQ network into its American counterpart, with an infinite range of subtle colours between the two extremes. The master section has global controls for volume, presence and resonance, which govern the output stage's high and low frequency response.

Lastly, perhaps the most powerful control on the panel is Blackstar's Dynamic Power Reduction feature, or DPR. This is a circuit that varies the power stage's output from maximum down to just 10 per cent, so you can go from 20 watts to 200 watts.

The rear panel features consist of a series effects loop with switchable levels, a speaker-emulated recording output with balanced and unbalanced connectors, speaker outlets with switchable impedance, a socket for the supplied footswitch, and a pair of MIDI sockets for channel-switching using MIDI program change commands. Overall, three very good-looking and highly specified amps, but what really matters is how they sound and respond.