Lab Gruppen C20:8X Amplifier

£3,199.00 (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: 2nd 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:

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  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
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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: 56808

  • Powerful Eight-Channel Amplifier
  • Adaptable to a Variety of Loads
  • Each Channel has Configurable Voltage Peak Limiter
  • Universal Power Supply
  • Efficient Cooling with Dual Variable Speed Intelligent Fans

Lab Gruppen C20:8X Amplifier

The Lab Gruppen C 20:8X is a 2u spaced, eight channel amplifier designed for a range of installation requirements. The C20:8X is the most powerful in the range delivering 8 x 250W at 4 ohms, 8 ohms and 16 ohms or 70 Vrm; 500W at 100Vrms available in bridge mode. The amplifier features configurable voltage peak limiters, an efficient cooling system and a universal power supply. The compact and lightweight Lab Gruppen C Series 20:8X is the perfect amplifier for any installation application with lower power output requirements.

Product Ref: 56808

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  • 15.9%
  • £110.82
  • £3,989.52
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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Like the other 4 CX models within the C series, the C20:8X is specifically designed to suit installation applications with lower power output requirements. Like the other higher power C series models, the CX have the same lightweight 2U chassis, however they are available in 4 and 8 channel versions for greater channel density and improved flexibility for installations. The amplifier can adapt to a variety of different load conditions and each channel has its own configurable Voltage Peak Limiter (VPL) to optimise the output of the loudspeaker load. The VPL works alongside the adjustable input gain to maximise headroom.

Lab Gruppen C Series

The Lab Gruppen C series of 4 and 8 channel amplifiers provides the solid foundation of install-dedicated amplifiers, with innovative features that make it perfect for the modern installation AV market. The C series is incredibly versatile, reliable and offer superb sound quality.



  • Number of Channels: 8
  • Peak Total Output all Channels Driven: 2000 W
  • Peak Output Voltage per Channel: 100V
  • Max Output Current per Channel: 8 Arms

Max Output Power All Channels Driven

  • 16 Ohms: 250 W
  • 8 Ohms: 250 W
  • 4 Ohms: 250 W
  • 2 Ohms: 125 W
  • Hi-Z per ch. (all ch.'s driven): 70 Vrms/ 100 V Peak: 250 W

Max Output Power Bridged

  • 16 Ohms: 500 W
  • 8 Ohms: 500 W
  • 4 Ohms: 250 W
  • 2 Ohms: Not Recommended
  • Bridged per ch 140 Vrms / 200 V Peak: 500 W


  • THD 20 Hz - 20 kHz at 1W: <0.1%
  • THD at 1 kHz and 1 dB Below Clipping: <0.05%
  • Signal to Noise Ratio: >112 dBA
  • Channel Separation (Crosstalk) at 1kHz: >70 dB
  • Frequency Response (1 W into 8 ohms) +0/-3 dB: 6.8 Hz - 34 kHz
  • Input Impedance: 20 kOhm
  • Common Mode Rejection (CMR): >50 dB, 20 Hz - 20 kHz
  • Output Impedance @ 100 Hz: 48 mOhm

Gain, Sensitivity and Limiters

  • VPL, Selectable per ch: 100, 63, 45, 32 V
  • VPL, When Bridged: 200, 126, 90, 64 V
  • Voltage Peak Limiter Mode (per ch.): Hard / Soft
  • Amplifier Gain Selectable (all channels) - Rear-Panel Switches: 29, 32, 35, 38 dB
  • Default Gain: 32 dB
  • Level Adjustment (per channel): Front-Panel Potentiometer, 21 Position Detented from -inf to

Connectors and Buttons

  • Input Connectors (per ch.): 3-pin Phoenix, Electronically Balanced
  • Output connectors (per ch.): Barrier Strip 2-pole Screw Terminals
  • Output Bridge Mode: A+B, C+D, E+F, G+H, inputs A, C, E, G are signal source
  • High Pass Filter: Fixed at 35 Hz, Switchable per Channel
  • NomadLink Network: On Board, 2 x RJ45 Connectors IN and OUT
  • Intelligent Fans (on/off): Yes, Depending on Presence of Output Signal
  • Power: Individual Switches on Front Panel
  • Cooling: Two Fans, Front-Rear Airflow, Temperature Controlled Speed
  • General Purpose Outputs (GPO): Contact Closure Types, 2-pole Phoenix
  • General Purpose Inputs (GPI): Contact Closure types, 2-pole Phoenix

Front-Panel User Interface

  • Common: NomadLink Network; Power Average Limiter (PAL); Power on
  • Per Channel: Signal present / High-impedance; Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute


  • Operating voltage, 230 V / 115 V Nominal: Universal Power Supply 65-265 V
  • Minimum Power-up Voltage, 230 V / 115 V: 80 V
  • Power Average Limiter (PAL): Yes
  • Power Factor Correction (PFC): Yes
  • Soft-start / Inrush Current Draw: Yes / Max. 5 A
  • Mains Connector: IEC Inlet


  • Dimensions: W: 483 mm (19"), H: 88 mm (2 U), D: 343 mm (13.5")


  • Weight: 8.5 kg (18.75 lbs.)


  • Finish: Black Painted Steel Chassis with Gray Painted Steel Front


  • Approvals: CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC