2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Radial J48 has been optimized to produce maximum headroom while working within the limited current available from standard 48V phantom power. The J48 is capable of peak transients to 9 volts without choking. The result is lower harmonic distortion, half the inter-modulation distortion and significantly improved dynamics over other DIs. Features include a -15dB pad, 180º polarity reverse, a unique merge function to mix two signals to mono, an 80Hz high-pass rumble filter, and ground lift. It’s built to handle the abuse on the road and features a unique welded I-beam construction.