Audio Research
LS28SE
Introduced 2020$12,000 MSRP
The Audio Research LS28SE is a tube-hybrid line stage preamplifier from the Minnesota-based maker, part of a 50th-anniversary "SE" update line featuring gold-plated coupling capacitors carried over from the flagship Reference 6SE. It replaces the earlier LS28 and carries performance refinements over that model.
MSRP
$12,000
Used market · Excellent
$7,790
-35% vs MSRP
as of Sep 1, 2026MSRP to used market
From $8,797 at launch to $7,790 today.
Specifications
- Gain
- Main: 18.5dB balanced / 12.5dB single-ended; Record output: 0dB
- Inputs
- 4 balanced XLR, 4 unbalanced RCA
- Weight
- 37.5 lbs net, 49 lbs shipping
- Outputs
- 2 balanced, 1 unbalanced, record out
- Topology
- 6H30 x4
- Crosstalk
- -105dB
- THD noise
- <0.007% @ 2V RMS balanced
- Dimensions
- 19"W x 7.8"H x 16.5"D
- Dynamic range
- 122dB (AES17)
- Inputs outputs
- 8 inputs (4 balanced + 4 single-ended); 3 outputs (2 main + 1 record, XLR + RCA)
- Input impedance
- 100k ohms balanced / 50k ohms single-ended
- Tube complement
- 4x 6H30P dual triode
- Power consumption
- 105–125VAC 60Hz (200–250VAC 50/60Hz), 130W max, 2W standby
- Frequency response
- +0/-3dB, 0.4Hz–200kHz (balanced, 200k ohm load)
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