ESC
A-84 (Rev. 2)

A-84 (Rev. 2)

BrandHallicrafters
ManufacturerThe Hallicrafters Co.
FunctionAmplifier, Power
Produced1952-1954
CountryUnited States
Signal PathAnalog Hardware
Dimensions34.3 × 19.3 × 21.6 cm (W × H × D)
Weight26lbs (Shipped)
Power105-125VAC, 50/60Hz 150W
Frequency Response6Hz-100kHz ±1dB (0.5W), 9Hz-100kHz ±1dB (10W)
Output Power10W
Output Power (Peak)20W
Amplifier TopologyWilliamson
Input Sensitivity1.25V
THD0.14%
IMD (40Hz:12kHz, 4:1)0.17%
SNR (10W)80dB
SNR (20W)83dB
Output Impedance0.5Ω (On 16Ω Tap)
Output Load Impedance8/16Ω
Damping Factor32
Output TubeKT-66
Tube ComplementKT-66 (x2), 12AU7 (x2), 5V4G
MSRP (1953)$99.50
Channels1 Channel
NotesChange in circuit with addition of two capacitors correcting ground hum issues.