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Blackstar Series One 45 - 45-watt 2x12" Tube Combo Amp , this item is no longer available, below are some similar products you may be interested in.

Blackstar Series One 45 - 45-watt 2x12" Tube Combo Amp

45-watt 2-channel All-tube 2x12" Guitar Combo Amplifier with MIDI Switching, Series Effects Loop, and Speaker-emulated Output - Black
Item ID: S1-45C
Sorry, the Blackstar Series One 45 - 45-watt 2x12" Tube Combo Amp is no longer available. We've left this page up for reference only.
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Blackstar Series One 45 - 45-watt 2x12" Tube Combo Amp
Blackstar Series One 45 - 45-watt 2x12" Tube Combo Amp

Mega-versatile Amp!

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Here's a versatile amp that delivers full-on tube tone! The Blackstar Series One 45 can go from ultra-clean to crushingly crunchy, giving you a ton of hands-on control to dial in the perfect sound. In fact, when you toggle between the bright and warm modes on the clean channel, the Series One 45 actually reconfigures its preamp voicing and power amp damping, giving you bright and ringing Class A performance or that warm and crunchy Class AB sound.

You've also got crunch and super crunch modes to choose from on the Series One 45. In crunch mode, you can go from just on the edge of clean breakup to totally thick, modern rhythm tones. In super crunch mode, the stops are out for maximum all-out crunch. You'll also appreciate the attention Blackstar paid to keeping your top end intact when you do launch into your overdrive sounds.

Looking for even more tonal flexibility? Blackstar also gave the Series One 45 their exclusive ISF control (ISF stands for Infinite Shape Feature). Using it in conjunction with your bass, middle, and treble controls, you can nail the exact tonal signature you want. When turned fully counterclockwise, you'll have more of an American characteristic to your voice, with a tight bottom end and aggressive middle. Turned all the way to the right, you'll enjoy more of a British vibe, with a woodier sound that's less aggressive. However you dial in the Series One 45, you'll enjoy a musical response that just asks to be taken onstage or into the studio.

If you're a plug and play sort of guitarist, you'll be right at home in front of the Series One 45. But if you've got a mind for the high-tech, you'll dig this mighty little combo, too. The Blackstar Series One 45 supports MIDI channel switching, allowing you to simultaneously select an amp channel and change the patch on a MIDI effects processor you have connected to the effects loop. Very nice. It supports 128 program changes, so you can access a wide range of tonal combinations.

Last but not least, the Blackstar Series One 45 has a convenient DPR (Dynamic Power Reduction) control. Grab the DPR and adjust the output power of the amp from 45 watts (100%) all the way down to 4.5 watts (10%) of the rated power. The control even adjusts the power amp compression, giving you a more playable feel when you're enjoying the comfortable listening levels of the reduced power settings.

Blackstar Series One 45 Features at a Glance:
  • 45-watt, 2 x 12" combo with built-in DPR power reduction
  • 1 x ECC82, 3 x ECC83, and 2 x EL34 valves
  • Clean channel with warm (Plexi) and bright (Class A) type modes
  • Overdrive channel with crunch and super crunch modes
  • ISF (Infinite Shape Feature) equipped tone control section
  • Presence control
  • Master Volume
  • Series effects loop
  • MIDI switching
  • Speaker-emulated output
  • FS-2 footswitch included
The Blackstar Series One 45 is the sonically versatile, supremely playable amp you've been wanting!

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.