Electro-Harmonix Bassballs - Twin Dynamic Bass Envelope Filter

Brand: Electro-Harmonix
Product Code: Electro-Harmonix Bassballs - Twin Dynamic Bass Envelope Filter
Reward Points: 71
In Stock
Price: $71.80 Price in reward points: 1420

Not one, but two narrow filters sweep your tones under control of the envelope, generating very unique vocal-like sounds. A distortion switch enriches the harmonics. The response control varies the sweep range determined by your attack. Not only designed for and great on bass guitar, but also very funky on guitar.

Quick Specs

True bypass
Tough and compact die-cast chassis
9-volt battery included
Optional 96DC-200BI power supply available
Dimensions in inches: 2.75 (w) x 4.5 (l) x 2.1 (h)
Dimensions in mm: 70 (w) x 115 (l) x 54 (h)

Bassballs, the first and only envelope follower of its kind, now in a compact pedal! The vocal sound of its two sweeping filters gives bass a strong presence under leads or a commanding quality when out front. The resonant frequencies are engineered solidly into the full range of the bass guitar’s strongest harmonics. The Nano Bassballs will respond to every bass note. The sweep is widely variable and harmonic enrichment is available with the Fuzz option. The Nano Bassballs is identical to the Bassballs but smaller. 


Connect your instrument to the INPUT jack. Connect your amplifier to the AMP jack. 

The range of the filters’ upward frequency sweep is set by the interaction of instrument volume and the RESPONSE control. Both stronger attacks and higher (clockwise) settings of the RESPONSE control increase the sweep range. Low volume and low RESPONSE settings will create little or no sweep and the Nano Bassballs will only provide a small boost in its lowest frequencies.

In its upward position, the FUZZ switch introduces additional harmonic enrichment that accentuates the filters’ action. The RESPONSE control also serves as a volume control for the FUZZ, increasing in volume in the clockwise direction.

The Status LED will light up when the Nano Bassballs is in effect mode. When in True Bypass mode, the LED will be off. Use the FOOTSWITCH to toggle between effect and True Bypass mode.


Power from the internal 9-volt battery is activated by plugging into the INPUT jack. The input cable should be removed when the unit is not in use to avoid running down the battery. If a battery eliminator is used, the Bassballs will be powered up as long as wall-wart is plugged in. 
The barrel connector on the front of the Nano Bassballs is for a 9-volt battery eliminator capable of delivering 100 mA of current. The inner ring of the 9-volt battery eliminator must be negative, the outer ring positive. The unit’s battery may be left in or taken out when the eliminator is in use.

To change the 9-volt battery, you must remove the 4 screws on the bottom of the Nano Bassballs. Once the screws are removed, you can take off the bottom plate and change the battery. Please do not touch the circuit board while the bottom plate is off or you risk damaging a component.

The input impedance presented at the Input Jack is 200 kohms. The output impedance at the Output Jack is 1.4 kohms.

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