Technical Specification
Thank you for showing your confidence in us by purchasing the BEHRINGER ULTRA
BASS CHORUS BUC400. This ultimate effects pedal is specifically designed to match the
range and applications of bass guitars. Thanks to its high-performance features you get
super thick chorus with unbelievable stereo effect.
The chorus effect slightly detunes the original signal. A very pleasant detune effect is
created relative to the pitch variation. The chorus effect is often used for dispersing signals.
Top view
The LEVEL control adjusts the output level.
The LOW FILTER control lowers the amount of ultra-low frequencies in the effect
signal to achieve more defined tone and avoid muddiness of sound.
The RATE control determines the chorus effect speed.
Turn up the DEPTH control to achieve a more full and deeper effect sound.
The ON/BATT LED illuminates when the effect is activated. It also serves as a
battery level indicator.
Use the footswitch to activate/deactivate the effect.
Use this 1/4" TS IN connector to plug in the instrument cable.
The two 1/4" TS connectors OUT A and OUT B send the signal to your amp. Use
both connectors if you want to achieve full stereo chorus effect. For mono use just
plug in OUT A.
Use the DC IN connection to plug in a 9 V power supply (not included).
The BATTERY COMPARTMENT is located underneath the pedal cover. To install or
replace the 9 V battery, press the hinges with a ballpen and remove the pedal cover. Be
careful not to scratch the unit.
The BUC400 has no on/off switch. As soon as you insert the jack into the IN
connector, the BUC400 begins running. When not using the BUC400, remove
the jack from the IN connector. This extends the life of the battery.
The SERIAL NUMBER is located at the bottom.
For our current warranty terms, please refer to our website at
1/4" TS
500 kΩ
1/4" TS
1 kΩ
Out A
Out B
Power supply
Power connector
Power consumption
Dimensions (H x W x D)
1/4" TS
1 kΩ
, 100 mA, regulated
U.S./Canada 120 V~, 60 Hz
220 V~, 50 Hz
U.K./Australia 240 V~, 50 Hz
230 V~, 50 Hz
100 V~, 50 - 60 Hz
2 mm DC jack, negative center
9 V type 6LR61
30 mA
approx. 54 mm (2 1/8") x 70 mm (2 3/4") x 123 mm (4 4/5")
approx. 0.33 kg (0.73 lbs)
BEHRINGER is constantly striving to maintain the highest professional standards. As a result of these efforts, modifications may be made
from time to time to existing products without prior notice. Specifications and appearance may therefore differ from those listed or shown.
Do not use near water, or install near heat sources. Use only authorized attachments/accessories. Do not service product yourself.
Contact our qualified servicing personnel for servicing or repairs, especially when power supply cord or plug is damaged.
No utilizar cerca de agua o instalar cerca de fuentes de calor. Utilice sólo accesorios y aditamentos autorizados. No intenté reparar
el producto usted mismo. Contacte a nuestro personal técnico cualificado para servicio y reparaciones, especialmente cuando la
fuente o el cable de alimentación estén dañados.
Не эксплуатируйте прибор вблизи от источников воды и тепла. Применяйте только авторизованные дополнительные
устройства. Никогда не ремонтируйте прибор самостоятельно. Ремонт может производить только квалифицированный
специализированный персонал, особенно при повреждениях сетевого провода или сетевой вилки.
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Technical specifications and appearance subject to change without notice. The information contained herein is correct at the time
of printing. The names of companies, institutions or publications pictured or mentioned and their respective logos are registered
trademarks of their respective owners. Their use neither constitutes a claim of the trademarks by BEHRINGER nor affiliation of the
trademark owners with BEHRINGER. BEHRINGER accepts no liability for any loss which may be suffered by any person who relies
either wholly or in part upon any description, photograph or statement contained herein. Colors and specification may vary slightly from
product. Products are sold through our authorized dealers only. Distributors and dealers are not agents of BEHRINGER and have
absolutely no authority to bind BEHRINGER by any express or implied undertaking or representation. No part of this manual may be
reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording of any kind,
for any purpose, without the express written permission of BEHRINGER Spezielle Studiotechnik GmbH. BEHRINGER® is a registered
trademark. ALL RIGHTS RESERVED. © 2006 BEHRINGER Spezielle Studiotechnik GmbH, Hanns-Martin-Schleyer-Str. 36-38, 47877
Willich-Münchheide II, Germany. Tel. +49 2154 9206 0, Fax +49 2154 9206 4903
Responsible party name:
MUSIC Group Services USA, Inc.
18912 North Creek Parkway,
Suite 200 Bothell, WA 98011,
Phone/Fax No.:
Phone: +1 425 672 0816
Fax: +1 425 673 7647
complies with the FCC rules as mentioned in the following paragraph:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
Important information:
Changes or modifications to the equipment not expressly approved by MUSIC Group can void the user’s
authority to use the equipment.
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