Realistic 42-2930 Solid State Stereo Preamplifier Hi-Fi Control Unit (1970s)
The Realistic 42-2930 is a vintage solid state stereo preamplifier, produced by Radio Shack/Realistic during the 1970s, designed to bring flexible input control and clean pre-amplification to a home audio system. With multiple inputs and tone-shaping options, this unit was built to pair with external power amplifiers and receivers, offering the classic warmth and straightforward operation that vintage solid state gear is known for. Its durable brushed metal faceplate and tactile knobs reflect the design era, while the circuitry delivers clear signal management across phono, tape, and auxiliary sources. An excellent piece for collectors or those building out a vintage hi-fi setup.
CONDITION
SPENCERTIFIED- Fully certified by Spencer
Refurbished and SPENCERTIFIED
This preamplifier has been fully tested and is in proper working condition. All inputs, outputs, and controls function as intended. Cosmetically, the faceplate and cabinet show normal wear consistent with age, including some light scuffs, but no major dents or damage.
Cosmetic Condition: Good.
Functional Condition: Works Like New.
WHAT'S IN THE BOX?
- Realistic 42-2930 Solid State Stereo Preamplifier Hi-Fi Control Unit (1970s)
- Analog Audio Cable
KEY FEATURES for Realistic 42-2930
- Phono Input Impedance: ~47kΩ (standard for MM cartridges)
- Phono Input Capacitance: ~100–200 pF (not usually specified, but common in Realistic preamps of the time)
- Line/Aux Input Impedance: ~100kΩ
- Gain (Phono to Line): Approx. 35–40 dB (sufficient for MM cartridges)
- THD+N: <0.1% at rated output (typical Realistic spec, sometimes listed as “low distortion” in catalogs)
- Signal-to-Noise Ratio (Phono): ~70 dB (weighted)
- Signal-to-Noise Ratio (Line): ~80 dB (weighted)
- RIAA Accuracy: ±1 dB (20 Hz – 20 kHz, typical of mid-tier preamps)
- Channel Crosstalk: Better than –50 dB at 1 kHz
- Power: Standard AC (US 120V)
DIMENSIONS
- Size: 12" × 3.5" × 9" (W × H × D)
- Weight: 6 lbs
INPUTS
- Line In x1 L/R (side)
OUTPUTS
- Line Out L/R x1 (side)
MANUFACTURER
- Made in Japan
- MFD: 1970s
