API 512c (x4)
       
     
CAPI VP26
       
     
Daking Mic-Pre IV
       
     
El Preamp
       
     
Ward Beck Systems M460 mic pre (x2)
       
     
Golden Age Pre 573
       
     
John Hardy M-1
       
     
Trident 4T Celebration
       
     
Universal Audio 2-610 Tube Preamplifier
       
     
API 512c (x4)
       
     
API 512c (x4)

All discrete, transformer balanced input/output design. Hi-z 1/4" input on front panel. Polarity, +48v phantom power, -20 dB pad, mic/hi-z switch all available on front panel. 7 segment LED VU level display. Tons of gain. Great on everything, except when the source sounds bad. Not a flattering preamp. GIGO.

CAPI VP26
       
     
CAPI VP26

Classic Audio Products of Illinois clone of API 312 design with output fader.

Daking Mic-Pre IV
       
     
Daking Mic-Pre IV

4 channel mic pre/line amp with 1/4" hi-z inputs. Based on Trident A-Range design. Excellent on drums.

El Preamp
       
     
El Preamp

API 312-style preamp custom designed for our MCI JH-636 mixing board by Nikhil Ranade with the help of Eliot Curtis.  The circuit design is dead simple and utilizes a Jensen JE-115K-E microphone input transformer followed by a 2520-style discrete op amp.  The output is transformerless.  Sonically very similar to the API 312 with less gain range.  Distorts nicely when driven hard.  We have 12 of these installed in our console.

Ward Beck Systems M460 mic pre (x2)
       
     
Ward Beck Systems M460 mic pre (x2)

From a decommissioned broadcast console. Often touted as "the Canadian Neve". Whatever. Large Hammond mic input transformer. Transformerless output. Great sound especially on electric guitar.

Golden Age Pre 573
       
     
Golden Age Pre 573

Based on Neve 1073 preamp design in a 500 series module.

John Hardy M-1
       
     
John Hardy M-1

Transformer balanced input and output.  No compromise design.  Huge sound.  Great on bass guitar.

Trident 4T Celebration
       
     
Trident 4T Celebration

Swiss Army knife-style channel strip with mic pre/line amp/eq/compressor and limiter all-in-one single unit.  IC based design.  

Universal Audio 2-610 Tube Preamplifier
       
     
Universal Audio 2-610 Tube Preamplifier

Mic pre, line amp, hi-z instrument DI with eq.  All tube.  Great sound.