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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 :)

Acus One Forstrings 4 Ferdi 40w Acoustic Guitar Amplifier

Acus One Forstrings 4 Ferdi 40w Acoustic Guitar Amplifier

Name: Acus One Forstrings 4 Ferdi 40w Acoustic Guitar Amplifier
Brand: Acus
SKU: ACOFSTRINGS4FERDIBK
Price: 324.00 GBP
Availability: InStock

An ultra-compact 40-watt acoustic amplifier built to provide natural instrument and vocal reproduction

SKU: ACOFSTRINGS4FERDIBK

£324.00

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Description

The Acus OneForStrings 4 Ferdi is an ultra-compact 40-watt acoustic amplifier built to provide natural instrument and vocal reproduction for home recording, desktop practice, and mobile performances. Serving as the entry point to the Ferdi series, this lightweight combo pairs studio-quality sound with versatile power options, making high-fidelity acoustic monitoring accessible wherever you play.

Designed for musicians who need a portable setup without sacrificing tonal fidelity, the OneForStrings 4 Ferdi brings professional acoustic engineering into a desktop-friendly enclosure. It offers a straightforward workflow and direct connectivity, giving solo artists and content creators an ideal solution for practice sessions and digital content creation.

Versatile Dual Powering Options

Adaptability is central to the OneForStrings 4 Ferdi design. When connected to the supplied 24V DC external power adapter, the amplifier outputs a full 40 watts of clean headroom. For ultimate mobility, the unit can also be powered via its USB-C port using a standard 5V power bank, providing a 15-watt output for off-grid playing and quick mobile setups.

This dual-power capability removes the need for fixed mains power when travelling or recording on location. Whether you are working at a desk or setting up in a temporary space, the amp provides consistent performance suited to intimate acoustic environments.

Two-Way Bi-Amplified Acoustic Output

To ensure detailed reproduction across the entire audio spectrum, the amp utilises a two-way bi-amplified system managed by an electronic crossover. Low and mid frequencies are driven by a 30-watt, 4" woofer, while high-frequency detail is handled by a dedicated 10-watt, 0.7" dome tweeter. This configuration yields a frequency response ranging from 70Hz to 20kHz with a maximum SPL of 96dB.

The cabinet is constructed from genuine birch plywood, a material favoured in professional acoustic design for its low resonance and structural stability. This natural enclosure helps maintain acoustic clarity, allowing acoustic guitars and vocals to sound clear and uncoloured.

Flexible Dual Input Control

Despite its compact footprint, the amplifier includes two separate inputs to accommodate both a microphone and an instrument simultaneously. Each input channel features its own dedicated volume control, letting you balance your vocal and guitar levels quickly on the top panel.

Overall tone shaping is managed via a global 2-band EQ alongside an onboard effect level adjustment and master volume knob. This straightforward control section lets you fine-tune your frequency response and add spatial depth without complicated menu navigation.

Integrated Streaming and Digital Connectivity

Modern production tools are built directly into the OneForStrings 4 Ferdi to support live streaming and direct tracking. The unit comes equipped with an included Bluetooth receiver for wireless audio playback from mobile devices, making it simple to rehearse alongside backing tracks.

In addition, TRRS audio in/out connectivity allows direct cabling to smartphones, tablets, or recording devices. This direct interface capability makes live broadcasting and mobile home recording straightforward, sending balanced acoustic sound straight to your preferred recording software or streaming platform.

Acus OneForStrings 4 Ferdi Specifications

System Format - two-way bi-amplified acoustic combo with electronic crossover.
Power Output - 40W RMS via included 24V DC mains power adapter; 15W via 5V USB-C power bank.
Frequency Response - 70Hz - 20kHz.
Maximum SPL - 96dB (82dB sensitivity at 1W/1m).
Speakers - 4" woofer (30W) and 0.7" dome tweeter (10W).
Inputs - 1 x microphone input, 1 x line instrument input, USB-C power input, TRRS audio input/output.
Wireless Connectivity - Bluetooth receiver included for audio streaming.
Tone Controls - 2-band EQ, channel volume controls, onboard effect level, and master volume.
Cabinet Construction - acoustic birch plywood enclosure.
Power Supply - external 24V DC power adapter (included) or standard 5V USB-C power bank (not included).

Weight and Dimensions for Acus OneForStrings 4 Ferdi

Dimensions (cm) = 25.4 L x 15.3 W x 12.3 D
Weight (Kg) = 2.40

The Acus OneForStrings 4 Ferdi earns its place as a practical, high-quality solution for acoustic musicians seeking desktop convenience and mobile flexibility. Combining bi-amplified clarity, USB-C power bank compatibility, and modern streaming connectivity, it provides dependable acoustic performance for home recording and practice.

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