FengzaiPedals Attenuator V4

Attenuator V4

FengzaiPedals

Discrete components, hand-built

Product Function Description

Impedance Select Toggle Switch: Two-position option for 80Ω / 160Ω; match the selected impedance with your speaker cabinet during operation.

Frequency Response Compensation Toggle Switch: Two preset frequency compensation modes; pick the proper setting per your listening preference.

Attenuation Selector Switch: Four fixed attenuation levels:

Position 1: -25dB｜Position 2: -20dB｜Position 3: -15dB｜Position 4: -10dB

Input Jack: Connect to your amplifier head’s Speaker Out terminal with speaker cable.

Output Jack: Link to your speaker cabinet using speaker cable.

Auxiliary Attenuation Knob: Activates only when the main attenuation selector is set to Position 1. Offers five incremental extra attenuation steps on top of the max attenuation for ultra-low volume requirements.

Independent Fan Power Jack: External DC input to power the cooling fan (power adapter not included, sold separately). Required adapter spec: DC24V, center positive tip.

Important Notes

This attenuator is rated 100W maximum power. For stable performance and operational safety, recommended operating power is 70W.

If your amp head’s rated output power exceeds 70W, apply intentional impedance mismatching:

Amp Head 4Ω Out → set attenuator load to 8Ω; Amp Head 8Ω Out → set attenuator load to 16Ω.

This mismatching method applies universally to all load & attenuation devices.

• Reminder：
• ① Each item is handmade to order. Production takes about 5 days after ordering, and will be shipped upon completion.
• ② All items are handcrafted. Minor handmade characteristics may exist, which are not defects. Please take this into consideration if you prefer a completely factory-finished look.
• ③ As each pedal is handmade to order, returns and exchanges are not accepted for non-quality related issues. Sound preference is subjective, and international shipping costs are significant. Thank you for your understanding.
• ④ Custom options for appearance and functions are available. Custom fees range from $0 to $20 depending on complexity. Feel free to message me for details.
• ⑤ Please read the included instruction card before use. Pay attention to power voltage and polarity to avoid damage. Issues caused by improper power use, modification, or mishandling are not covered under warranty.
• ⑥ The listed shipping fee includes international courier delivery. For most countries, it also covers applicable import duties and taxes; for a small number of countries, taxes are not included.
• Buyers are responsible for any additional local taxes or fees imposed by customs (rare in practice).
• A remote area surcharge may apply if your address is classified as remote by the carrier, which is not included in the shipping cost.
• After ordering, I will verify the address and inform you of any additional charges. You may either accept the updated total or apply for a full refund.