Radial Engineering SGI44 Balanced Long-Haul Send and Receive Guitar Effects Loop interface for JX44

The Radial SGI 44 is a studio-quality bidirectional effects router that designed to take the output from a wireless receiver and run the guitar signal to the pedalboard and back. Two SGI-44s are used with one positioned at the wireless end, the other at the pedalboard. Connection is made using standard XLR cables.

The first SGI-44 converts the unbalanced high-impedance guitar signal to a balanced low-impedance signal and the second reverses the process - thus allowing distances of more than 100 meters (300') without noise. To ensure optimal signal quality, the SGI-44 employs 100% hand-inserted discrete parts with Jensen isolation transformers to make up the class-A circuit. Although less efficient than the chip based AB circuits that are common with today’s ‘cost driven’ designs, single ended class-A circuits are preferred by audiophiles due to the lack of zero-cross distortion. These deliver greater transparency and realism. To further improve the feel, the SGI-44 is equipped with Drag Control load correction. This allows you to 'dial in' the perfect load as if connected to a tube guitar amp using a standard guitar cable. To add versatility, the SGI-44 is equipped with a buffered tuner out for quick between song adjustments or can be used to split the guitar signal to a second signal chain if need be.

Built "Radial tough", the SGI-44 is made in Canada using 14-gauge steel. An innovative I-beam internal frame protects the sensitive circuit board from outside stress which could torque the solder points and cause premature failure. Radial's innovative book-end construction creates recessed zones at each end that protect connectors, switches and controls from harm's way.

The Radial SGI-44 makes it easy to route guitar signals around a stage, in the studio or in a large venue while delivering the very best signal quality.

Features

• Bidirectional long-distance 'send & receive' effects router
• Drive guitar & bass signals beyond 100 meters
• 100% discrete class-A circuitry
• Works with the Radial JX44 guitar & amp selector

Specifications

• Audio Circuit Type: Active 100% discrete class-A with transformer isolation
• Frequency Response: 20 Hz to 20 kHz (-2 dB)
• Dynamic Range: 105 dB
• Total Harmonic Distortion: 0.005% @ 1k
• Intermodulation Distortion: 0.02% @ 1k
• Input Connectors: 1/4", XLR
  • Input Impedance: Variable from 10 kΩ to 1 MΩ
  • Noise: -100 dBu
  • Maximum Input: +2 dBu
• Output Connectors: 1/4", XLR
  • Output Impedance: 218 Ω (1/4" unbalanced), 280 Ω (TX balanced)
• Features: Ground Lift, Drag Control
• Construction: 14-gauge steel chassis and outer shell
• Power: +15VDC/400mA adapter included
• Conditions: For use in dry locations only, 5-40°C
• Dimensions (H x W x D): 2" x 4.25" x 5"
• Weight: 3 lbs (1.36 kg)