Old Blood Noise Endeavors Expression Ramper Basic

Automate Your Expression, Unlock New Sounds.

Transform any expression-enabled pedal into a dynamic, moving effect with the Old Blood Noise Endeavors (OBNE) Expression Ramper. By replacing a traditional foot treadle with a compact, automated LFO and one-shot controller, the Expression Ramper allows you to sweep pedal parameters effortlessly. Set two expression points (A and B) and move between them in a single motion, or create continuous rhythmic modulation triggered by a footswitch.

Housed in a mini-enclosure that takes up minimal pedalboard real estate, it’s the ultimate utility for unlocking hidden potential in the pedals you already own.

Advanced LFO, Random, and One-Shot Control

Go beyond basic sweeps. The Ramper features an intuitive shape toggle and tap switch that unlock six different wave shapes—from standard Triangle and Square waves to Smooth Random, Sharp Random, and One-Shot modes. Tap in your tempo or use the assignable knob to dial in the exact rate and A/B positions you need.

Universal Pedal Compatibility

The Expression Ramper is highly configurable. Internal jumpers allow you to switch between TRS, TRS reverse polarity, and TS configurations, ensuring it works seamlessly with brands like Chase Bliss, Meris, EarthQuaker Devices, Strymon, Boss, Electro-Harmonix, and more.

Key Features:

• A/B Endpoint Setting: Pick two expression settings and seamlessly move between them.
• 6 Selectable Wave Shapes: Choose from Triangle, Square, One-Shot, Smooth Random, Sharp Random, or One-Shot Random.
• Tap Tempo & Rate Control: Set your exact modulation speed via the assignable knob or tap switch.
• Momentary or Latching Switching: Footswitch triggers motion exactly how your performance demands.
• Customizable Digipot: Comes standard with a 50K digipot, internally replaceable with 10K or 100K versions to match any pedal’s requirements.
• Internal Polarity Switching: Configure for standard TRS, TRS reverse polarity, or TS connections.

Technical Specifications:

• Potentiometer Value: 50K (Replaceable with 10K or 100K)
• Output: 1/4" Jack (Internally configurable for TRS / TS / TRS Reverse)
• Power Requirements: 9V DC Center Negative, 50mA (Power supply not included)
• Dimensions: 2” (W) x 3.75” (H) x 2” (D)

(Note: For complete setup and internal jumper instructions, refer to the official OBNE Expression Ramper manual).