Audio Research Reference 6SE
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Model name
Reference 6SE
Analog inputs (balanced)
4
Analog inputs (single-ended)
4
Analog outputs (balanced)
3
Analog outputs (single-ended)
3
Gain (dBu)
12dB Balanced output, 6dB SE
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
120 000
Input impedance (single-ended) (Ω)
60 000
Output impedance (balanced) (Ω)
600
Output impedance (single-ended) (Ω)
300
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
0.4
Frequency response high +/- 3dB (Hz)
200 000
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
<0.01
Dimensions (mm)
480 × 198 × 419
Weight (kg)
13
Official link
Audio Research Reference 10. Tube preamp, balanced circuit with external power supply, frequency range: 0.1 Hz - 200 kHz (+0-3 dB), harmonics: 0.006%, gain: 12 dB (XLR), 6 dB (RCA), electronic volume control: 104 steps, interactive display, Lamp configuration: 8 x 6H30P, 2 x 6550C,2 6H30P in the supply circuit.
The LS28SE differs from its predecessor by more precise synchronization of the amplification stages and higher precision of the signal settings. The preamp is an improved version of the LS28 model from the same manufacturer. The new model differs from the standard version with improved elements and proven technologies. For example, gold capacitors were used in the preamp, as in the REF6SE model.
Tube-based line-stage (6 x 6H30P dual triodes, plus 6550WE and 6H30P in power supply) offers standard 2V RMS into 200K ohm balanced load with maximum balanced output capability is 70V RMS.