Blackstar SERIES ONE 45 watt 2x12" Combo

Review - Blackstar SERIES ONE 45 watt 2x12

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 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; 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.
S1-45 combo

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 is a tough steel box and needs to be, as the amp has substantial transformers.

"Blackstar's Series 1 amps are going to be very, very hard to beat. Bugger the credit crunch � you need to try them."

Thankfully, the S1-45 combo's generously sized cabinet is fitted with a pair of side-mounted grab handles, making it relatively easy to transport. Another feature that lightens the combo's weight is the pair of custom-designed Celestion G12-NV70 loudspeakers, which have neodymium magnets. They're much more efficient and substantially lighter compared to the regular ceramic version.

On the front panel, two pairs of gain and channel volume controls share a single EQ network. One channel is dedicated primarily to clean sounds and can be switched between two modes � warm and bright.

The other channel is for overdrive and again there are two modes, called crunch and super crunch. 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 four-and-a-half watts up to 45.

"With any decent Strat, we reckon the S1-45 offers the best single-box solution to Stevie Ray Vaughan's elusive 'clean yet driven' tone."

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.
Sounds

One cool thing about the S1's bright and warm clean options is that, behind the scenes, the power amp is also being reconfigured, going from Class A operation with no feedback in bright mode, to Class AB with feedback in warm mode.

This makes for a dramatic difference between the two clean modes. Combined with Blackstar's ISF control, the EQ is wide-ranging, yet easy to dial in, and the gain range for both clean sounds is perfectly tuned.

Using the S1-45 combo with the clean channel gain turned all the way up produces some excellent chiming rhythm tones, which are made even better when we start to use the amp's dynamic power reduction feature.

By just lowering the output power and raising the master volume, it is easy to nail that elusive sweet spot, where the amp just starts to naturally compress as you hit the strings harder, at any volume level.

While the bright clean setting will sound fantastic with effects, we preferred the warm's clean tones, rounder bass and generous mid-range for humbuckers and single-coils �there's plenty of range on the EQ to handle both.

Where the clean modes finish, the S1's crunch takes over and we'd have to say that the crunch mode has some of the best tone and response we've heard from any amp in any price bracket for a very long time.

Bold and very forward sounding with a fast attack, it's supremely responsive to player input and once again it is very rewarding to be able to tune in exactly the right output stage response using the DPR control.

"Unlike other manufacturers' power reduction features, ours doesn't sit between the valves and the loudspeakers," explains Blackstar's Bruce Keir. "A lot of the magic in a great amp happens in that chain from output valve to transformer to loudspeaker and you mess with it at your sonic peril.

"The DPR circuit reduces the output valve's voltages proportionally, maintaining that dynamic feel of power stage 'sag' and compression at any output level."

With any decent Strat, we reckon the S1-45 offers the best single-box solution to Stevie Ray Vaughan's elusive 'clean yet driven' tone, as well as a ton of other great sounds.

Switching to super crunch mode kicks everything up a gear for blistering solos, yet roll off the guitar's volume knob and you're back in Cleansville � it's very responsive. We were also very impressed with the smooth break-up of the Celestion NV70 loudspeakers � these are superb drivers.

Blackstar's Series 1 range is going to find a lot of fans at all levels, from serious amateurs to top pro players. We like the care that's evident in every corner of the design. Cool 'secret' features such as digital valve monitoring (which automatically puts the amp into standby if you pull the guitar lead out) and MIDI channel switching are great, but let's be in no doubt about this, the bottom line is great tone and all three amps have got bucket-loads of it.

Thanks to Korean manufacturing, the price is better than you'd expect for such great performance and, if the whole range matches up to the quality of this trio, Blackstar's Series 1 amps are going to be very, very hard to beat. Sod the credit crunch � you need to try them.

VERDICT:
One thing that's missing from so many multi-function amps these days is character. The Series 1 amps have tons of it, with all the flexibility you need. It's been a very long wait for these amps to arrive, but it's been worth every minute!

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Blackstar SERIES ONE 45 watt 2x12" Combo

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