Price Match Request
Found this item cheaper elsewhere? Let us know by filling out the form below and our team will be in touch to complete a price match for you, ensuring you get the best price.
V12 Finance. Why wait, get it now.
Choose Your Deposit:
?
Finance Options:
OPTIONS DEPOSIT MONTHLY PAYMENTS
Product Cost: £?
Total Payable: £?
Representative Example
This is a £? loan, your monthly repayments will be £? for ? months followed by a final payment of £?. The total amount payable is £?. The cost for credit (interest and charges) is £?. APR ?% representative.
Stock Email
Please Select a Bundle to View
Personalised multi-point setup included

Before dispatch, your instrument will be treated to a full setup. That's not a quick tweak, but a full multi-point setup by an experienced guitar technician who will check and adjust every single thing on your guitar, bass, ukulele or banjo to ensure it is performing at its absolute best.

This is not a quick process but we believe every instrument should go through our process to acheive an exacting standard of playability.

Frets

We start with the frets on your instrument. All guitar necks move and change over time so we will make sure that your frets are nice and flat as we go up the neck. We don't want any high or low spots as this will mean your guitar will need a higher than optimum action and potentially suffer with fret buzz.

We check and properly profile the playing surface of the frets and then make sure the fret ends are finished off properly. The fret is then polished to ensure smooth string bending.

Truss Rod

Then it's on to the truss rod. This metal rod differs from guitar to guitar (some guitars such as classical guitars don't usually have a truss rod!) and basically controls the "relief" or curve of the neck. Not enough relief and your strings won't have enough clearance over the other frets when playing. Too much relief and you'll have a high action which gets worse as you go up the neck.

The heavier the strings then the more the truss rod needs to work. Proper adjustment in the workshop means that the action will be just right for the strings fitted to your guitar.

Top Nut

The top nut is super important and is one of the two open contact points of your guitar. The technician will check and cut each slot to make sure the strings both run freely but are not sitting in a slot that's too big.

The top nut also plays a big part in the action of your guitar so we'll hit that sweet spot between too low and too high.

Saddle(s)

Another really important part of your guitar!

On an acoustic, the saddle is cut to the correct height making sure the bottom is 100% flat and straight. This means the string can transfer its vibration properly into the body of your guitar.

For electric guitars, the saddles are adjusted to ensure your intonation is perfect. We will also match the saddles to the radius of your fretboard.

Bridge / Tremolo

The bridge affects the break angle and string height of your guitar and is also responsible for holding your saddles.

For a guitar with a Floyd Rose tremolo system or similar, the spring tension has to be just right to allow the tremolo to return to its "zero point" and keep everything in tune.

For guitars with standard tremolos, we can set it to float and be used both up or down like a true tremolo or we can lock the trem block back so the tremolo will only go downwards.... the choice is yours!

Intonation

Intonation is the measure of how in-tune the guitar string is across the length of the fretboard and a guitar with badly set intonation will get more and more out of tune as the string is shortened when you play.

Tiny adjustments are made to each string where applicable to adjust its length and ensure that the intonation is set just right.

Overall Action

Once all the above has been completed, the guitar is checked for playability and fine adjustments are made. This step brings everything together and means your guitar will be set up optimally.

Machine Heads

Every machine head is operated and checked for function. We need to ensure that the machine heads operate smoothly.

Electrics

All the functions of your guitar are checked to ensure everything is working as intended.

For acoustic guitars we will check the functions of the EQ system and controls as well as check the internal cabling and jack socket.

For electric guitars, all the pickups are checked for function and tonal response. All controls and switches are operated to ensure they are functioning properly. The jack socket is checked.

Other Parts

All other parts such as strap pins, bushings, tuning buttons etc are fully checked.

Dispatch

All our instruments get the same premium treatment whether you purchase online or instore.

If you have purchased online, your guitar will be carefully packed ready for dispatch. You will receive a tracking link via email.

Happy playing :)

Phil Jones Bass D-400 Compact Bass Amp head
Phil Jones Bass
Phil Jones Bass D-400 Compact Bass Amp head
Phil Jones Bass D-400 Compact Bass Amp head
Phil Jones Bass D-400 Compact Bass Amp head

Phil Jones Bass D-400 Compact Bass Amp head

Silent Power & Studio Precision

SKU: PJBD400BLK
£657.00
Loyalty Club Points Earn 657 Loyalty Club Points
Quantity
 Not in Stock but available to order.
This item is out of stock but available to order. Once you have ordered, our team will be in touch to let you know a delivery time.
PRICE MATCH
COMPARE
Description Reviews (0) Questions
Description

The Phil Jones Bass D-400 is a professional-grade, high-fidelity bass amplifier head designed for musicians who refuse to compromise on tone, power, or portability.

Fanless Efficiency & Premium Engineering 

Delivering a 350 Watts RMS, this compact head wraps clean acoustic reproduction into a lightweight package. 

It is a great tool for studio tracking, theatre pits, and live stages where absolute transparency and absolute silence from your electronic gear are required.

The defining feature of the D-400 is its completely noise-free operation. 

Utilising advanced, high-efficiency Class D amplifier circuitry, the head generates minimal heat, entirely eliminating the need for an internal cooling fan. 

This ensures the amplifier runs completely silent and cool, enhancing long-term reliability while removing background fan hum during critical microphone recordings. 

The chassis itself is a testament to premium engineering, precision-machined from aircraft-grade anodised black aluminium and built to a standard 1U height for seamless rack-mounting integration.

Creative Tone Shaping & Dynamics Control 

For precise acoustic control, the D-400 features a highly responsive 5-band graphic equaliser, allowing you to tailor your sound to any room or cabinet configuration. 

The input stage is equipped with a three-way mini switch to toggle between Mute, Low, and High sensitivity modes, safely accommodating both passive and hot active instruments.

To keep your dynamics perfectly balanced, the front panel includes a switchable Compressor & Limiter, which smooths out transient peaks and adds natural sustain without colouring your fundamental instrument tone.

Phil Jones Bass D-400 Bass Samp Head Features & Specifications

  • High-efficiency Class D amplifier design provides clean, uncoloured power

  • Fanless cooling system guarantees completely silent, noise-free operation

  • Precision-crafted chassis made from rugged, aircraft-grade anodised black aluminium

  • Standard 1U form factor for optional rack-mount configuration

  • Power output: 350 Watts RMS into 4 Ohms, 200 Watts RMS into 8 Ohms

  • Precise 5-band graphic EQ for advanced, musical tone shaping

  • Input sensitivity toggle switch (Mute / Low / High) to match active or passive basses

  • Built-in studio-quality Compressor & Limiter with dedicated on/off switch

  • Balanced XLR DI-Out for direct routing to front-of-house or recording interfaces

  • Dedicated PreAmp-Out and independent Headphone-Out for versatile routing options

  • Global voltage compatibility: 100 – 240V AC for international touring flexibility

  • Dimensions: 244mm x 193mm x 43mm (9.6" x 7.6" x 1.7")

  • Ultra-lightweight design weighing only 1.3 kg (2.9 lbs)

  • Professional matte black finish with premium tactile control knobs

  • Compatible with an optional PJB padded soft gig bag (sold separately)

Reviews (0)

Write a review

RATING:
 *  *  *  *  *
Questions

Ask a question

WE TRY TO RESPOND TO ALL QUESTIONS WITHIN 24 HOURS
COMPARISON BASKET COMPARE