Linear FOUR VALVE - MasterSounds



Regular price £2,195.00 Sale

Hand-built to order in approximately 6-8 weeks. 

We hand build all our DJ mixers, FX units & LinearPOWER accessories to order, via analogue legend Andy Rigby-Jones & his small team of ultra passionate audio professionals in rural Cornwall with skill, care & attention to detail.



Product Description

Introducing the MasterSounds Linear 4V analogue fader DJ mixer.

Building on the success of the award-winning Radius DJ mixers, the new MasterSounds flagship 4V range comprises of premium 4 channel boutique DJ mixers aimed at clubs and DJs requiring a conventional DJ toolkit with a “no compromise” approach to audio fidelity. Available in both rotary and linear fader options, the Radius 4V and Linear 4V encompass the pinnacle of audio excellence, equipped with the highest quality components.

There are 4 fully-featured channel strips with Aux Send (switchable pre or post-fader), input level trim, illuminated input select switch, a super smooth 3 band asymmetric equaliser, large illuminated Cue switch, high-quality faders (TKD for the Linear 4V and Alps for the Radius 4V) and 10-point LED VU meter.

To the right of the channel strip features a 3-band Master EQ/Isolator, Master and Booth level controls, headphone monitor with split and Cue/add mix control.

Below the master section is a high-quality Penny & Giles crossfader, with contour control to adjust the curve from smooth mix to fast cut.

Two 36mm illuminated analogue VU meters provide accurate signal level monitoring of the mix buss, these automatically switch to monitoring the Cue level when a channel Cue is activated. If the signal level is excessive, the VU meter illumination will change from warm white to bright red.

At the heart of the 4V are four matched dual triode valves (tubes) which form part of the input buffer stage to the VCAs. The valve’s high input impedance minimises loading on the preceding stages but provides low output impedance to drive the VCAs, whilst the valve’s natural compression smooth and warm harsh transients. Careful circuit design around the valve minimises noise and distortion.

A new split composite/passive RIAA stage featuring Vishay 2% Polypropylene capacitors, close tolerance thin film resistors, and JFET pre-amplifiers provide outstanding fidelity from the turntable inputs. All circuit coupling is through bypassed Panasonic electrolytics to preserve this fidelity throughout the entire signal chain.

The icing on the cake is a pair of MUSES01 operational amplifiers, providing world-class summing for the fully balanced main mix buss.

*Please note - orders outside the EU do not have VAT applied, but will be subject to local import taxes on delivery*

Shipping & Payment




Please Note -  Customers outside the UK will have to pay import duty on receiving goods, MasterSounds specifies the full purchase amount on all shipping and customs documents. 

PayPal Express Checkout

We now offer the facility for customers to pay for their orders with PayPal Express Checkout. This allows you to take advantage of the various credit options supplied directly by PayPal to you as the customer. MasterSounds is not the proprietor of any credit agreements.

Warranty & Returns


All of MasterSounds DJ mixers and FX Units come with a full 2-year international warranty. The warranty applies only to the original purchaser and is not transferrable. Please see section 5 of the product manual (digital copy below)

Return & Exchange Policy

If you are not completely satisfied with your MasterSounds purchase please contact us within 14 days of receiving your item to discuss a refund or exchange. Refunded and exchanged items must be unused and in all original packaging. No returns or exchanges are permitted on custom orders. The buyer is responsible for all return shipping costs.


Do you have any mixers or FX units in stock? 

All of DJ mixers and FX units are hand-built to order. Each product will have an estimated build time above the tab menu. 

Our exclusive retail outlet is Phonica Records in London, who keep a limited stock of our DJ mixers, FX unit, TRBxM and turntable weights. Please check the Phonica website for more details or give them a call.

Can MasterSounds mixers or FX Unit be used where I live?

Each of our mixers & FX Units is supplied with a compact external switch mode power supply, enabling use anywhere in the world with the correct IEC lead, which we supply for your country of residence. Touring DJs can use our mixers anywhere in the world, simply by changing the IEC lead relevant to the country the unit is shipped to. The FX Unit comes with a portable power supply with several types of plug configuration, enabling use anywhere in the world.

Do you ship to my location?

We ship items to locations across the world on a daily basis via signed courier service, so the likelihood is that we will be able to ship directly to you.

We send all of our audio accessories via Royal Mail tracked & signed.

Our DJ mixers & FX units are all sent via UPS courier service.

VAT, do I have to pay for it?

VAT is automatically applied to any purchase made within and shipped to the EU. Orders made outside the EU do not have VAT applied, but will be subject to local import taxes on delivery. If you are unsure how much import tax will be payable, please contact your local customs office who will be able to advise.

Technical Specification

 Power Requirement

External Power Supply - Universal 90V – 265V AC 50/60Hz 18-18-19V 50W Max

DC Internal Power Rails - +/- 18V DC

 Audio Performance

Residual Output Noise - <-97dBu 20Hz to 20kHz un-weighted

Mix noise Unity Line IN to Mix Out - <-89bBu 20Hz to 20kHz un-weighted

Distortion THD+N - <0.01% Line IN to Mix OUT 0dBu

Dynamic Range - >116dB

Maximum Signal Level - ±27dBu

Frequency Response - 10Hz – 50kHz +0/-1dB

10Hz – 80kHz +0/-3dB

Headphone Output Power - 800mW RMS into 32 Ohms


Channel EQ - 3 Band -20/+6dB

Channel EQ Frequency - 100Hz, 1kHz, 5kHz

Master EQ/Isolator Cut/Boost - OFF to +12dB

Master EQ/Isolator Crossover Fc - 350Hz and 3.5kHz

RIAA Accuracy - Within 0.25dB 40Hz – 20kHz.


W = 350 L =  283 H = 84 (mm) 

**PLEASE NOTE** This is the Faceplate size. Not including knobs, Sockets, Headphone Jack, Cabling ETC...

Weight = 4.75kg

Packed Dimensions       

W = 460 L =  360 H = 180 (mm)

Packed weight = 6.3KG


MasterSounds reserves the right to change the specification without notice.