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Blackstar St. James

Named for the 12th-century abbey in Blackstar’s hometown of Northampton, England, the St. James Series of amplifiers was designed with two goals in mind. First, Blackstar wanted to create the lightest possible tube amps on the market, and second, to provide all users with amazingly lifelike sounds when running direct. And since these amps are from Blackstar, they don’t skimp on traditional tube tones or performance. The company’s engineers thoughtfully designed and selected every component to deliver uncompromising sound in a lightweight package that’s easy to transport.

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Let There Be Light

For most players, tone and feel are the most important qualities an amplifier can have. Most of those players cite the tube amplifier as the gold standard for feel and tone. The issue is that most great tube amps capable of providing 50 or more watts of power put a massive strain on your back — until now. Introducing the St. James Series: the lightest 50-watt tube guitar amps on planet Earth. 

Uncompromising Sound

The engineers at Blackstar spent hundreds of hours listening to the most revered amplifiers to develop a reference point for the St. James amplifier series. In addition to the clear tonal differences between EL34 and 6L6 power tubes, both St. James designs are designed for specific uses. Take the St. James EL34, for example: this version is ideal for classic rock tones and combines world-class British crunch with American-style cleans. Meanwhile, the 6L6 version flaunts the same headroom paired with Blackstar’s highest-gain overdrive circuit ever. By offering two tonal flavors, the St. James Series is yet another instance of Blackstar raising the sonic benchmark.

Studio Ready

St. James amplifiers come loaded with cutting-edge features that deliver best-in-class recording performance. All St. James amps feature 50-watt, 2-watt, and SAG switchable power modes. Plus, a built-in reactive load allows you to route your signal to one of the three direct recording outputs (XLR, stereo line-out, and USB) for an authentic “amp-in-a-room” feel. The direct recording outputs are descended from Blackstar’s state-of-the-art and fully customizable CabRig DSP speaker simulator.

Pro Connectivity

Nowadays, more and more musicians are recording at home and playing on silent stages. St. James amplifiers are designed to fit into the way guitarists play today. They come with USB audio connectivity for professional-level recording and an XLR DI for backline use onstage. Both the USB and DI take advantage of the built-in reactive load and CabRig DSP speaker simulation.

Lightweight with No Compromise

Blackstar collaborated with Celestion to develop the Zephyr lightweight ferrite speaker. Zephyr speakers are an ultra-accurate emulation of Celestion’s iconic Vintage 30 speaker. They reproduce the rich sound and wide-ranging performance of the Vintage 30 at a fraction of the weight! This is achieved by using a traditional ferrite magnet instead of the standard neodymium magnet. The cabinets are constructed from candlenut plywood for strength and lightness, plus its inherent acoustic properties. If you’re rocking a St. James combo or half stack, you’ll get a roadworthy cabinet that sounds great and won’t weigh you down. 

Universal Voltage

St. James amplifiers leverage efficient and lightweight power transformers and updated Switched-Mode Power Supply technology. The company spent upwards of three years performing intense R&D, which helped them achieve the lightweight and universal voltage compatibility of a Switched-Mode Power Supply while simultaneously retaining the sound and feel of an old-school, iron-core transformer. Blackstar’s revolutionary transformer technology is patent-pending.

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.