Italian FBT HP 400 Amplifier A professional stereo power amplifier from FBT. [1, 2, 3] Key features: ◦ Brand: FBT (Made in Italy) ◦ [1] Crossover Filter: Equipped with a Third Order Butterworth X-Over Filter. [1] Interface Controls: - Volume control knobs for each channel (Ch 1 & Ch 2) with Clip indicators. - Active Protect indicators. - Main Power Switch in the center. [1] Power (HP 400 Model): - Continuous Power: Approximately 2 × 100W into 8 ohms, or 2 × 140W into 4 ohms. [1]