Bing ads convertion tracker Aphex 124B
Bookmark and Share

Aphex 124B

Level Matching Interface


The industry standard for interconnecting Consumer and Pro level stereo audio equipment.
Allows use of consumer (–10dBv) gear with pro (+4 or +8dBm) systems Two-way buffer so consumer and pro systems can operate properly Acts as a signal splitter, providing two high quality balanced outs from an unbalanced "Y" connector

A Clean and Reliable Solution for Bidirectional Level and Impedance Matching
The Aphex Model 124B Audio Level Interface is designed to allow use of -10dBV consumer hi-fi equipment with +4 or +8dBm professional/industrial/broadcast audio systems. It provides an extremely clean, reliable two-way buffer so both systems can operate at maximum performance levels, matching impedances and operating levels.


Servo-balancing means that high common mode voltages, such as induced hum from a nearby AC line, are compensated for, preserving headroom. The input impedance of 100K Ohms allows bridging over a 600 Ohm balanced or unbalanced line with negligible loading effects. Front panel switchable 600 Ohm load allows for input line termination when required.
Servo-balancing allows the outputs may be used balanced or unbalanced (single-ended) at any time by simply grounding either unused pin. The servo compensates for the voltage loss on one side so there is no 6dB loss of level. The outputs are also protected against short-circuits, so nothing is damaged if the wrong pins are grounded. A front panel indicator will flash red when the balanced output level is 5dB below clipping.

• Bandwidth: 5Hz – 100 kHz (+0, -0.5dB)
• Dynamic Range: 99 dB
• THD: 0.005
• Channel Isolation: > 70dB
• CMRR (typical): > 45 dB
• IHF Input Connectors: RCA Jacks
• IHF Input Impedance: 18 k Ohms
• IHF Input Level: -10 dBV; peak +15dBV (ref. 1V)
• Balanced Input Connectors: XLR 3-pin Female
• Balanced Input Impedance: 100k Ohms with front panel 600 ohm termination switch
• Balanced Input Level: +4 dBm (+8dBm via internal jumpers); peak +30 dBm
• IHF Output Connectors: RCA Jacks
• IHF Output Impedance: 150 Ohms
• IHF Output Level: -10 dBV, peak +18dBV (ref. 1V)
• Balanced Output Connectors: XLR 3-pin Male
• Balanced Output Impedance: 65 ohms
• Balanced Output Level: +4dBm Front panel adjustable ± 6dB, peak +25dBm
• Power Requirements: 100, 120, 220, OR 240 VAC, 50-60Hz
• Dimensions: 1.75″H x 8.25″W x 7.25″ D (44.5mm x 209.5mm x 184.2mm)
• Net Weight: 3.5 lbs (1.6 kg)

List Price: $349.00
Free Shipping!
Call For Availability
You Saved:
$50.00 (14%)

View ALL Aphex Products

Customers also Viewed...
Recently Viewed