Original retail price €349.

Aphex 124A Brand new, unused and in its original packaging!

The Aphex 124A is just the thing if you’re using long cables and need to convert hi-fi levels to balanced levels. In practice, there are countless situations where this is needed, for example, where hi-fi equipment is on one side of the room and balanced amplifiers are near the speakers. The 124A handles long cables with ease and features trimmer level controls, which are useful for minor adjustments to the left-right balance.

The Aphex Model 124A Audio Level Interface was developed to enable the use of -10dBV hi-fi equipment with +4 or +8dBm professional / industrial / broadcast audio systems. It provides an extremely clean, reliable two-way buffer, allowing both systems to operate at maximum performance, with impedances and operating levels matched.

Also colloquially referred to in German as a boost amplifier.

FEATURES

• Matches consumer Hi-Fi equipment to professional systems
• Dual-buffered interface
• Transformerless outputs
• Servo-balanced inputs and outputs
• 600-ohm input termination via push-button
• Clip indicator
• Excellent signal quality
• Recessed output level controls

APPLICATIONS:

Two-way interface amplifier for connecting any unbalanced equipment such as cassette decks, equalisers, CD players or DAT decks to the IHF inputs and outputs. The balanced inputs and outputs connect to a studio console, a patchbay or other line-level equipment. The various gain settings and impedances are matched to ensure optimal performance.

Line driver. The servo-balanced input and output stages of the 124 can be used as highly effective line drivers for long cables. The output stage provides a short-circuit-proof, low-impedance source that remains relatively unaffected by the cable’s impedance. The gain can even be used to boost the signal level. For this application, either the unbalanced HF or the balanced high-level inputs can be used. In the latter case, the HF inputs and outputs are simply bridged.

Signal splitter. The 124 can be used to generate two high-quality balanced outputs from a single unbalanced mono signal. A ‘Y’ connector is used to split the incoming signal to each of the unbalanced IHF inputs.

IHF distribution amplifier. The 124’s very low output impedance allows it to drive a considerable number of unbalanced devices such as cassette decks, video recorders, power amplifiers, etc. By switching the various inputs and outputs, one can select between balanced and unbalanced inputs.

SPECIFICATIONS - Aphex Model 124A Bidirectional Audio Level Interface

AUDIO

Bandwidth 5 Hz – 100 kHz (+0, -0.5 dB)

Dynamic range 99 dB

THD 0.005

Channel isolation > 70 dB

CMRR (typical) > 45 dB

INPUTS

RCA input connectors

RCA input impedance 18 kΩ

RCA input level -10 dBV; peak +15 dBV (referenced to 1 V)

Balanced input connectors 3-pin XLR sockets

Balanced input impedance 100 kΩ with front-panel 600-ohm termination switch

Balanced input level +4 dBm (+8 dBm via internal jumper); peak +30 dBm

OUTPUTS

IHF output connectors RCA sockets

IHF output impedance 150 Ω

IHF output level -10 dBV, peak +18 dBV (referenced to 1 V)

Balanced output sockets: 3-pin XLR plugs

Balanced output impedance: 65 ohms

Balanced output level: +4 dBm, front panel adjustable ±6 dB, peak +25 dBm

OTHER SPECIFICATIONS

Power requirements 100, 120, 220, OR 240 VAC, 50-60 Hz

Dimensions 1.75‘ H x 8.25’ W x 7.25" D (44.5 mm x 209.5 mm x 184.2 mm)

Net weight 1.6 kg (3.5 lbs)

Please note:

• For shipments to ‘non-EU countries’, please always enquire in advance about the exact shipping costs! This applies in particular to large and/or heavy items.
• Please also note that import duties and taxes may apply. Here too, we will try to assist you with any queries.