Radial Engineering HDI Owner's Manual page 5

True to the Music
REAR PANEL FEATURES
11
11. POWER INPUT: Connection for IEC power supply cable (included). Ensure the front panel Power switch is in the off (down)
position before connecting the HDI to power.
12. 15dB PAD: Reduces the signal level at the Line-Level XLR output to avoid clipping the input stages of recording interfaces with
lower maximum input settings.
13. LINE-LEVEL OUTPUT: Independently isolated Jensen transformer-equipped XLR output designed to connect directly to the line-
level inputs of a recording console or audio interface, bypassing the need for a separate preamplifier in the signal chain.
14. MIC-LEVEL OUTPUT: Typical direct box balanced low-level XLR output, for connection to stage snakes or the mic inputs of a
recording console or audio interface. This output follows the Line-Level XLR Output, and features an additional premium Jensen
transformer for isolation and signal reduction to mic-level.
15. PROCESSED OUTPUT: Unbalanced 1/4" TS output that follows the tone-shaping circuitry of the HDI, allowing you to easily feed
an affected signal to a stage amplifier, amp modeling unit, or any device with instrument-level inputs.
16. SYNTH INPUT: Mono 3.5mm input for connection to modular synthesizers. This input features a lower sensitivity to accommodate
the hotter levels that modular synths typically output. For more level and drive with a mono synth the 1/4" Inputs can still be used.
The Synth input may also be useful for bringing in hot line-level signals from a DAC for processing. Connection to this input
overrides both 1/4" instrument inputs.
17. INPUT: Standard 1/4" TS jack for connection to mono instruments, mirrored on front panel input jack.
Radial Engineering Ltd.
12 13 14 15 16 17
HDI™ Owner's Manual
4