W
312+
PREAMPS · 2020

312+

Stam Audio
Manufacturer
Stam Audio
Type
Preamps
Production
2020
Orig. price
$1,490
Model
312+
01

From the Community

From the community

Start a discussion

No conversations about the 312+ yet — own one or know it well? Ask the first question, share a fix, or post your unit.

02

Audio Demos

03

Compatible Sound ROMs

04

Modifications

05

Owner Registry

Production figures for the 312+ were never widely published, so there’s no official record of how many were built — or how many survive. This registry is a community census: every owner who logs their unit makes it the closest thing there is to a real count.

0units registered
0 serials recorded
No units on the census yet — be the first to put your 312+ on the map.
Own one? Add it to My Gear to join the registry

Serial number, condition, and configuration are aggregated anonymously into the census.

06

System Components

Manufacturer

Stam Audio

Stam Audio

View all products →

Specifications

DI
Yes
Pad
20dB
Gain
60dB
Knobs
API style
Op Amps
4x Stam SA-25 (Huntington 2520 replica)
Based On
API 312 (1970s)
Channels
2
Topology
Dual-stage fully discrete
Warranty
2 years
Resistors
Ohmite Carbon
Capacitors
Vishay/BC
Line Level
Yes
Money Back
30 days
Output Trim
Yes
Construction
Hand made in Chile
Phantom Power
48V
Polarity Switch
Yes
Input Transformers
2x custom US-made AP2622 (1:7)
Output Transformers
4x custom US-made AP2503 (quadfilar, steel)

Need Service?

View All Service Centers →