AI-generated product photo — not official manufacturer imagery.
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
About the B4
The First Watt B4 is a stereo active crossover designed by Nelson Pass, featuring adjustable crossover frequencies, slopes (1st, 2nd, 3rd, or 4th order), and output levels. It employs JFET active circuitry operated without feedback for exceptional clarity and low noise. Originally priced at MSRP $1200, it is highly regarded for its dead quiet performance and flexibility in bi-amping setups. No longer available new from the manufacturer.
Specifications
Connectivity
Input and output connections
- Analog Inputs
- Unbalanced (SE)
- Analog Outputs
- Unbalanced (SE)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions