Acus OneForStrings 10 Ferdi — 250W Acoustic Amplifier / Small Band Workhorse

Overview

The Acus OneForStrings 10 Ferdi is the flagship in Acus’s Ferdi line, a 250 W amp built for acoustic instruments, vocals, and small-band performances. It combines clean power, rich dynamics, and comprehensive input flexibility — ideally suited for players who demand pro-level coverage in a compact package.

Key Features & Benefits

High Output Bi-Ampped System
With 250 W of total power split between a 10″ woofer and a 1″ compression driver tweeter, this amp delivers weighty lows and pristine highs without distortion. The electronic crossover ensures smooth handoff between drivers and full-range clarity.

Multi-Channel Versatility
Three independent channels each include gain, 3-band EQ, effects send, and volume control. Channel 1 adds advanced features:

• Compressor with threshold and ratio settings

• Instrument Character Switch (Flat / Bass / Jazz) to tailor the tonal response depending on your instrument’s voice

These options let you dial in optimized tone whether you're playing acoustic guitar, double bass, or semi-acoustic instruments.

Aux / Bluetooth / TRRS I/O
Beyond the main channels, the amp includes an AUX / TRRS input and output (with Bluetooth support) for backing tracks or streaming sources. This extra flexibility makes the unit studio ready as well as stage capable.

Professional Connectivity

• XLR Direct Out for clean stage or FOH routing

• Footswitch input for remote control

• Balanced XLR and TRS options for mic/instrument inputs

Specifications & Build Details

• Max Power: 250 W

• Woofer / Tweeter Split: ~170 W (woofer) / 80 W (tweeter)

• Frequency Range: 40 Hz – 20 kHz

• Max SPL: 114 dB

• Sensitivity (1 W / 1 m): ~95.2 dB

• Channels: 3 main + 1 aux / Bluetooth

• Cabinet Construction: Birch plywood (wood finishes available)

• Dimensions (W × H × D): ~277 × 464 × 477 mm

• Weight: ~13.6 kg

• Power Supply: External 24 V DC adapter (included)

Design & Build Qualities

The OneForStrings 10 Ferdi is built in Italy with attention to tonal fidelity and stage aesthetics. The warm wood veneer cabinet complements acoustic instruments visually while resisting excess resonance. All controls are laid out intuitively for fast adjustments in live settings. Durability, clarity, and refined tone are evident in every aspect of its design.

Free standard shipping within the Continental U.S. Delivery typically takes 5-8 business days. Express Shipping is available for an additional charge.

Returns:

Web orders- returns accepted within 5 days of delivery for new products and a refund is issued minus the cost of return shipping or a customer may ship back at own expense for a full refund.

In-Person purchases- returns are accepted within 5 days of purchase for new products.

Show Returns- For purchases made at shows, expo's, or meets, the return period for new items expires at the conclusion of the show's sheduled hours and dates.

Used and demo items are sold as described and may not be returned unless they arrive materially different than described. In-person purchases of used items are sold As-Is.

All returns must be in original packaging and in original, unused condition. Damages and signs of use will be assessed and charged against a refund if found.

Shipping damage- If products are damaged during shipping, it must be reported to us within 24 hours of receipt. All packaging must be retained until a damage claim is complete.