Manley Mastering SLAM

£6,295.00 (including VAT @ 20%)

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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: 7th November 2016
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: 75866

  • Tube Sections Paralleled for Lower Noise and Distortion
  • Rotary Switches for Detented Resettability and Easier Calibration
  • Hard-Wire Bypass Function
  • Dedicated Unbalanced Transformerless Inputs
  • XLR or 1/4" Inputs Selection

Manley Mastering SLAM

The Manley Mastering Slam is a professional, dual channel mastering device featuring an ELOP circuit and brickwall limiters to provide you with access to fundamental control of your audio. The Mastering Slam offers a high degree of visual feedback, utilising LED ladder peak meters to complement the excellent VU meters, overall allowing for effortless use whilst monitoring and mastering your audio. With upgraded features dedicated for mastering use, the Manley Mastering Slam is the perfect rack mountable mastering device for your studio space.

Product Ref: 75866

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  • 15.9%
  • £217.91
  • £7,844.76
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

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Built with Mastering In Mind

The Manley Mastering Slam bears some differences to the original Slam, including the lack of mic preamps and an input select switch. Replacing those are dedicated mode switches: one each for the ELOP and the FET limiters. The ELOP limiter now has more ratios: 10:1, 5:1, 3:1, 2:1 and an added feature calle AutoHF which starts off as a 1.5:1 ratio and increases gradually to 10:1 fro highs. The FET limiter also becomes more versatile, with new modes including 50 , NORM, LP Lim, BOTH, and CLIP. Further upgrades include an unbalanced 1/4" jack input select to replace the phantom toggle, a DAC select switch, a master stereo LIMIT bypass switch to replace the blue limit button, and finally, discrete detented switches in mostly 1 dB steps, with some appropriate 1/2 dB and 2 dB steps to replace all of the potentiometers on the front of the previous Slam.

Advanced Visual Feedback

The Mastering Slam allows you to meter raw input levels, ELOP limiter gain reduction, and final output levels with the dual, backlit VU meters. The VUs also utilise switchable pads at 0, -3dB and -6dB so that you can prevent clipping whilst mastering your audio. For even more visual feedback, the Slam features LED ladder peak meters so that you can monitor FET gain reductions, input levels, and output levels. The LED meters do Peak, Peak Hold timed, and Peak Hold until reset.

Integrated Electro-Optical Circuit

The Manley Mastering Slam also integrates the electro-optical circuit, found on the Manley ELOP. This features a convenient sidechain high-pass filter. The ELOP is equipped with 2 simple rotary controls to provide easy access to the control you need. The on-board FET-based brickwall limiter allows you to use both limiters at the same time to get as much of each effect as you like.


  • No mic preamps or instrument inputs. Instead the tube sections are paralleled for lower noise and distortion
  • All potentiometers are replaced with rotary switches for detented resettability and easier calibration
  • Hard-wire bypass function, which is not possible on the regular version with mic preamps, etc.
  • What was the Left Bypass, becomes the full Bypass (in stereo and hardwired). No separate L & R bypass buttons
  • There are dedicated unbalanced transformerless inputs on the mastering version. What was the Phantom Power switch on the back now selects XLR or 1/4" inputs
  • The ELOP limiter now has 5 ratios, which may put it into the compressor/limiter category. The lower ratios may be better suited for complex mixes
  • The FET limiter has 5 modes (these last two features replace the INPUT selector)


  • Input Tubes: 2 x 12AT7A NOS GE specially selected by Manley Labs for lo-noise and stable bias
  • Output Tubes: 2 x 6414W NOS USA dual triodes
  • I/O: MANLEY transformer coupled Balanced Inputs and Outputs
  • Gain: 20dB max Limiter Gain
  • FET Limiter: Attack: approx. 100μS; Release: 10mS to 2Sec; Ratio: better than 20:1
  • ELOP Limiter:Attack: Approx. 10mS for 6dB GR; Release: 2.5 Sec; Ratio: 10:1
  • Frequency Response: 5Hz to 60KHz
  • Maximum Output: +32dBm, +30dBm (into 1KΩ load)
  • THD+N: <.05 @ 1KHz
  • Dynamic Range: 115dB typical
  • Output Impedance: 200Ω
  • Power Consumption Slam! Analog:
    • 0.480 Amps (480 milliamps = 480mA) @ 120V = 57.6 Watts
    • 0.240 Amps (240 milliamps = 240mA) @ 240V = 57.6 Watts
  • Outboard Power Supply: Factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
  • Operating Mains Voltage: Changeable with power transformer re-wiring via switch and fuse value change.
  • Mains Voltage Frequency: 50 60Hz
  • Size: 19” X 12” X 3.5” (occupies 2u)
  • Shipping Weight: 25 lbs.