Stone Deaf FX SD50 50W Digitally Controlled Valve Amp Head

£1,799.99 (including VAT @ 20%)

Available for orderDelivery Information

Item available to order

This item is available to order, and we do not currently have the item in stock.

When you place your order, we will request the item from our supplier as soon as possible. We will dispatch this product to you as soon as it is received from our supplier.

"Estimated delivery to you" is our estimate of when we will be able to deliver the product to you, based on our supplier's normal delivery timescales. If we become aware it is going to take significantly longer than normal to deliver this item, we will let you know, otherwise, we will advise by email or text message when the item has been dispatched from our distribution centre.

Estimated delivery to you: 8th March 2017
FREE Delivery available.

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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

  • Software
  • CDs & DVDs
  • In-ear Monitors
  • Earplugs and Ear Protection
  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
  • Mouth / Lip Care Products

We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Product Ref: 70137

  • Feature Packed Digital Valve Amplifier Head
  • 50 Watt Output Ideal for Live Use
  • Valve Type for Classic Tones
  • 32 Available Sound Presets
  • 8 Watt Limiter Option for Home and Recording Use

Stone Deaf FX SD50 50W Digitally Controlled Valve Amp Head


The Stone Deaf SD50 Amplifier Head produces versatile tones from your electric guitar. The SD50 is all analogue and features class A or class A/B operation for achieving a reliable tone with depth and clarity. The 50 watt power output is suitable for frequent gigging musicians that require a reliable amp head. The SD50 can also drop down to 8 watts, which is ideal for recording and home use. There are 32 available pre-set slots for quickly accessing your favourite sounds.

Product Ref: 70137

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Buy on finance from £49.29 per month Finance from £49.29 per month  

  • 15.9%
  • £62.43
  • £2,247.48
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

View Full Description

Valve amplifier heads are renowned for having a tone full of depth and texture. The SD50 has all of this, along with some exciting extra features. The pre-set function enables you to access up to 32 saved sound modules from 8 banks. This is useful for accessing the exact sound you need with ease. The simple controls make the SD50 easy to navigate through, and the LED lights are ideal for venues with low lighting. With 50 watts of power, the SD50 is aimed at gigging musicians needing a road worthy, reliable amp head. The SD50 bridges the gap between a tuneful valve sound and a digital amplifier’s user-friendliness.


  • Wattage: 50W RMS
  • Chassis: Aluminium
  • Cabinet: Poplar
  • Mains Voltage: 240v / 120 v Switchable
  • Pre-amp Valve: 4 x ECC83S
  • Power Amp Valve: 2 x 6L6GC
  • Rectifier: GZ34
  • Power Amp Operation: Class A/B Cathode Bias or Fixed Bias, Class A Cathode Bias or Fixed Bias
  • Volume Controls: Volume, Gain
  • Tone Control: Bass, Middle, Treble
  • Channel Select: Via Push-Button Control on Gain, Footswitch/ Midi Control
  • Pre-Set Select: Via Push-Button Control on Gain, Footswitch/ Midi Control
  • Reverb: Buffered Reverb Loop
  • Effects Loop: Series Buffered Loop with Send and Return Level Controls
  • Input: 1 x ¼’’ Jack, 1 x MIDI In
  • Speaker Outputs: 1 x 8 Ohm, 1 x 16 Ohm