The 504 II is a sophisticated multi effect processor for acoustic or electric guitar.

Rich effect palette for acoustic guitar

The 504 II incorporates a wealth of effects specially designed for use with an acoustic guitar. De-AMP reduces harshness when playing an acoustic guitar through a guitar amplifier. AIR lends a spacious feeling to the sound. TOUCH makes picking more uniform and smooth. The 504 II is also useful as a preamplifier for recording acoustic or electric guitar, and it offers various patches tuned specially for electric guitar.

Great for electric guitar too

The built-in simulator transforms the sound of an electric guitar into that of an acoustic instrument. During a live performance, this makes it a snap to switch between different sound characteristics.

Highly effective feedback suppressor

The F.B.SUPPRESSOR function automatically detects the frequencies where feedback (howling) occurs and attenuates that band. Operation can be controlled easily with a footswitch.

Built in auto-chromatic tuner

The integrated tuning function lets you quickly and precisely tune your instrument on stage.

Dual Power Supply enables operation anywhere

The dual power supply principle allows the unit to be powered either from an AC adaptor or from four AA batteries. Continuous operation time on batteries is 8 hours with manganese batteries and 28 hours with alkaline batteries.

Compatible with footswitch and pedals

An optional footswitch (FS01) or expression pedal (FP01/FP02) can be connected to the CONTROL IN jack. The footswitch is useful for quickly detecting the feedback frequency, and the expression pedal allows adjusting the volume or effect tone in real time.

Improved successor to 504

While inheriting the sound characteristics of of the very successful ZOOM model 504, the 504 II is even more compact. What's more, it incorporates the world's first wah effect specifically designed for acoustic guitar, plus several other novel effects such as the EMPHASIZER which duplicates the characteristic sound of a resonator.

Specifications

• Built-in effects: max. 10 simultaneous / 33 total
• Banks and patches: 6 banks x 6 patches = 36 patches (rewritable, with memory store capability)
• A/D Converter: 16 bit, 64 times oversampling
• D/A Converter: 16 bit, 8 times oversampling
• Sampling Frequency: 31.25 kHz
• Input: Standard mono phone jack (rated input level -20dBm/input impedance 470kilohms
• Output: Standard stereo phone jack (doubles as line and headphone jack) - (maximum output level +5 dBm/output load impedance 10 kilohms or more)
• Control Input: For optional FP01 or FP02/FS01
• Display: 2-digit 7-segment LED
• Power requirements: Separately available AC Adaptor, 9 V DC, 300 mA (center minus plug) (ZOOM AD-0006) or Four AA batteries