Dynaco PAT-4A
A solid-state stereo preamplifier made in the United States during the 1960s or 1970s.
Overview
It was built for line and phono preamplification. Input sensitivity is 10mV, and the headphone output can drive 600 ohm headphones. The selector switches are the wafer type. They are prone to failure and hard to replace.
Specifications
| Product type | Solid-state preamplifier / Stereo Preamplifier |
| Country of manufacture | United States |
| Input Sensitivity | 10mV |
| Signal to Noise Ratio | 70dB (MM), 85dB (line) |
| Headphone output | Sufficient power for 600 ohm headphones |
Design
The PAT-4A is a solid-state preamplifier. The research on hand gives no further details on circuit topology, components or construction.
Market
Listed prices for the Dynaco PAT-4A have ranged from $50 to $189, and units often sell untested or for parts. The usual problems are broken selector wafer switches, which are hard to replace, and missing knobs. Active forum discussions show some interest in rebuilding the unit.
eBay Listings
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