Benchmark Media Systems LA4

The award-winning Benchmark LA4 may be the most transparent line-level preamplifier available at any price. The 100% analog signal path features a pair of fully-balanced relay-controlled attenuators with 256 steps and 0.5 dB resolution. Designed, assembled, and tested in the USA using USA and imported components.
| Brand | Benchmark Media Systems |
| Model | LA4 |
| Frequency response | |
| Total harmonic distortion (%) | 0.00006 |
| Signal-to-noise ratio (dB) | 135 |
| Input impedance (Ω) | |
| Output impedance (Ω) | 60 |
| Gain (dB) | |
| Phono input | |
| Height (mm) | 99 |
| Width (mm) | 220 |
| Depth (mm) | 212 |
| Weight (kg) | 3.63 |
Variants
| Finish | Barcode | Part number | |
|---|---|---|---|
| Benchmark Media Systems LA4 500-17100-100 | 500-17100-100 | ||
| Benchmark Media Systems LA4 500-17100-101 | 500-17100-101 | ||
| Benchmark Media Systems LA4 500-17100-102 | 500-17100-102 | ||
| Benchmark Media Systems LA4 500-17100-103 | 500-17100-103 | ||
| Benchmark Media Systems LA4 500-17100-200 | 500-17100-200 | ||
| Benchmark Media Systems LA4 500-17100-201 | 500-17100-201 | ||
| Benchmark Media Systems LA4 500-17100-202 | 500-17100-202 | ||
| Benchmark Media Systems LA4 500-17100-203 | 500-17100-203 | ||
| Benchmark Media Systems LA4 602573174203 | 602573174203 | ||
| Benchmark Media Systems LA4 602573174210 | 602573174210 | ||
| Benchmark Media Systems LA4 602573174227 | 602573174227 | ||
| Benchmark Media Systems LA4 602573174234 | 602573174234 | ||
| Benchmark Media Systems LA4 602573174241 | 602573174241 | ||
| Benchmark Media Systems LA4 602573174258 | 602573174258 | ||
| Benchmark Media Systems LA4 602573174265 | 602573174265 | ||
| Benchmark Media Systems LA4 602573174272 | 602573174272 |