
acus sound engineering One for strings 4Ferdi
Product Condition
Brand New | Unused, as sold. |
---|---|
Mint | Like new, no flaws. |
Excellent | Barely used, very minor wear. |
Very Good | Light wear, fully functional. |
Good | Visible wear, plays fine. |
Fair | Heavy wear, still playable. |
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Description
Description
At acus, all of our equipment, including amplifiers, cabinets, and PA systems, is handmade and specially designed for acoustic performances.
Everything from the speakers to the internal electronics is custom made, and ACUS engineers have planned and designed everything from the internal structure to the finest specifications to ensure the optimal sound range is output for the acoustics.
For over 40 years, acus has been committed to producing equipment that reproduces pure, natural sound, and has been manufacturing acoustic-specific equipment in Recanati, Italy.
It has been highly praised by many musicians, especially in Europe, for its high sound quality and design.
~ALLROUND4~
ALLAROUND4 emits sound in all directions (ALLAROUND) in three dimensions, 360° horizontally, and also up and down vertically.
It can be considered the instrument and vocal version of the modern audio equipment known as a sound bar, and delivers a super natural sound that is in a league of its own compared to conventional instrument amplifiers.
It has two independent inputs for microphone and guitar, a 2-band EQ, and a master volume that doubles as an effect and power ON/OFF switch. The Bluetooth audio input and TRRS audio input/output are also equipped with 2-band EQ and volume controls.
By connecting to a PC or smartphone with a TRRS cable, you can use it for music production using DAW software or for live streaming via social media. *TRRS cable not included.
It can be powered not only by the included AC power adapter but also by a 5V mobile battery (USB-C). When connected to an AC power source, the output is 50W, and when connected to a 5V mobile battery, the output is 15W.
Frequency response: 50Hz - 20kHz
Maximum power: 50 Watt with Power Supply - 15 Watt with
Power Bank
Channels: 1
System Format: 2-way amplifier
Woofer power: 30 Watts
Tweeter power: 20 Watts
Sensitivity 1W @ 1m: 81 dB
SPL Max: 87 dB
Crossover: Elettronico
Woofer size: 4
HF speaker: Dome tweeter 1
Power System: External Power Adapter 18V DC (Included) -
Standard Power Bank 5V (Not Included)
Construction: Brick Plywood
Weight: Approximately 3.9 kg
Height: 384.8 mm (15.15 inches)
Width: 152.9 mm (6.02 inches)
Depth: 152.9 mm (6.02 inches)
Accessories : Bluetooth receiver (Included)
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
For orders exceeding Paypal’s transaction limit of 1 million yen, we will provide more details. For secure transactions, items will only be shipped to the address registered in your Paypal account.
Regarding detailed information and contact information to us, please check FAQ.
Please Note
The following information applies to international orders.
■ Condition
Items with “USED” in the product name are pre-owned and will be delivered as shown in the photos. Signs of wear may be present. All items are function-tested by our staff and rechecked before dispatch.
■ Stock
Many products are stocked across Ikebe stores in Japan. As a result, shipment may take several days. In-store sales may also cause items to sell out. If an item is unavailable, we will contact you promptly; in that case, the order will be canceled and any payment will be refunded.
■ Shipping
We ship via FedEx. Shipments are fully insured against damage or loss during transit.
- Asia: 10–20 days (estimated)
- North America & Oceania: 20–30 days (estimated)
Shipping costs are calculated based on the delivery address and confirmed at the time of dispatch.
■ Taxes & Duties
Import duties, taxes, and fees are the buyer’s responsibility and are not included in the item price or shipping cost. These fees are typically collected by the carrier upon delivery or at pickup. Please check with your country’s customs office for details before purchasing.
■ Other
We cannot declare a reduced item value or mark purchases as gifts.
* Warranty
Our product warranty is valid only within Japan.
* Voltage
All electrical products are intended for the Japanese market and are designed for 100 V operation.

About us
Founded in 1975, Ikebe Music is one of Japan's largest general music stores.Thanks to its long history and proven track record, it has earned the trust of musicians and music fans not only in Japan but around the world.
Ikebe Music ships not only within Japan, but also overseas.As a well-known retailer of used musical instruments in Japan, we have a wide selection of used and vintage instruments.
We have a wide variety of unusual and rare instruments, so please take a look.Please note that we do not list new products, as our contracts with our suppliers prohibit international shipping.
About our stores
In Japan, we have about 30 stores in Tokyo (Ikebukuro, Shibuya, Akihabara) and Osaka.
We have just opened our flagship store, IKESHIBU (IKEBE SHIBUYA), in Shibuya, Tokyo, which brings together numerous musical instrument specialty stores and serves as a hub for entertainment culture.
Please be sure to stop by if you are visiting Japan.


About Shipping





We carefully pack every item with protective materials to ensure it arrives safely.
The photos above show an example of how we securely pack a bass guitar for shipping.