Written by Karl Erik Sylthe, at 15.02.07
Translated to English in june 2008
Latest update april 2010

Stereo amplifiers with processor-input - The official list.



The nature of a processor-input is to make it possible to combine a higher end stereo setup with a not so high end hometheater setup. Obviously the person would prefer this combined setup is a music-lover. The author of this article has systematically collected a list of amplifiers with Processor-input for almost a decade. It is not to our knowledge that a similar list is published elsewhere.

This kind of input is known under many different names, like Processor-input, Theater-input, Theater-bypass, Unity gain and Fixed-gain are all names used. The input is used for sending the signal from a surround receivers left and right front-channel via pre-out to the processor-input, which has a fixed gain.
British Arcam was among the earliest producers of Hi-fi to implement a processor-input in their amplifiers in the now long gone Alpha series. But we suspect Mark-levinson to be the very first producer.
In order to be qualified to a place in our list, we demand that the processor-input at least can be selected from the front panel, even though remote selection is preferable. What we do not accept, is solutions that involves operations at the back of the amp to choose the processor-input, except for installation procedures.
The solution for all amps listed here has been controlled by checking the online user manual, or other written documentation. The list both contains current and past products.
Some of the amps listed below have links to review of this product at audiophile.no. For the time being thes reviews are only available in Norwegian.

We are certain that som amplifiers are missing at this list, and we highly appreciate hints about missing amplifiers.

Integrated amps

Abrahamsen Audio V2.0  
Advantage S100  
Arcam Alpha 8R  
Arcam Alpha 9  
Arcam Alpha 10  
Arcam DiVA A70  
Arcam DiVA A75/75plus  
Arcam DiVA A80  
Arcam DiVA A85  
Arcam DiVA A90  
Arcam FMJ A18  
Arcam FMJ A28  
Arcam FMJ A32  
Arcam FMJ A38  
Atoll In200  
Audio Analouge Puccini Settanta  
Audiolab 8000S  
Ayon Audio 300B  
Ayon Audio Crossfire
Ayon Audio Mercury  
Ayon Audio Sunfire  
Ayon Audio Sunrise II  
Ayon Audio Triton
Ayre AX-7e  
Bel Canto e.One S300i
Bladelius Thor Mk-II  
Bladelius Tyr  
Boulder 865 Integrated Amplifier
Cambridge Audio Azur 740A  
Cambridge Audio Azur 840A  
Cambridge Audio Azur 840A v.2  
Cary Audio CAI 1  
Chapter Audio Precis  
Classè CAP-151  
Classè CAP 2100  
Denon PMA-1500AE  
Denon PMA-1510AE
Denon PMA-2000AE  
Denon PMA-2010AE
Denon PMA-2000 IV  
Densen B-110  
Densen B-130  
Densen B-150  
Electrocompaniet ECI 4  
GamuT DI 150
Harman/Kardon HK990
Hegel H100 
Hegel H200  
Jeff Rowland Concerto Integrated Amplifier  
Krell KAV-300iL  
Krell KAV-400xi 
Krell FBI
Linn Classic 
Mark Levinson N° 383 
Micromega IA-60
Micromega IA-100
Micromega IA-180
Monrio Asty  
Musical Fidelity A1008  
Musical Fidelity A308 Integrated Amplifier  
Musical Fidelity A3.5 Integrated Amplifier  
Musical Fidelity A5 Integrated Amplifier  
Musical Fidelity A5.5  
NAD M2
Naim NAIT 5i
Naim Nait XS 
Naim Supernait  
Perreaux E160i  
Perreaux 200i / 200iP  
Perreaux R200i  
Roksan Kandy K2 Integrated Amplifier
SAT Amplifix  
Sim Audio MOON i-5080  
Sim Audio MOON i-3  
Sim Audio MOON i-3 SE  
Sim Audio MOON i-5  
Sim Audio MOON i-5.3  
Sim Audio MOON i-7  
Thule IA75B  
Vincent SV234  
VTL IT-85
Yamaha A-S1000  
Yamaha A-S2000  
Yba Passion 100 Intègrè  
Yba passion 200 Intègrè  
Yba Passion 300 Intègrè

Preamplifiers:
Abrahamsen Audio PA-1  
Abrahamsen Audio V3.0  
Adcom GFP 750
Advantage P1 
Advantage S2  
Arcam Alpha 9C  
Arcam FMJ C30  
Arcam FMJ C31  
Atoll PR300  
Audio Analogue Bellini  
Audio Analogue Maestro Stereo Line Preamplifier  
Audio Research SP16L  
Ayre K-5xe  
bel canto PRe1  
Bel Canto PRe3
Boulder 810 Preamplifier
Boulder 1010 Preamplifier
Boulder 1012 DAC Preamplifier
Boulder 2020 Isolated Stereo Preamplifier
Cambridge Audio Azur 840E  
Cary Audio cpa 1  
Cary Audio SLP-2002  
Cary Audio SLP-5  
Chapter Audio Preface  
Classè CP65  
Classè CP-500  
Classè CP-700  
Conrad Johnson CT5  
Conrad Johnson CT6  
Conrad Johnson Premier 18LS  
Conrad Johnson PV14L  
Conrad Johnson PV15  
Densen B-200  
Densen B-230  
Densen B-250  
GamuT D3  
GamuT D3i  
Jeff Rowland Capri Preamplifier 
Jeff Rowland Coherence II  
Jeff Rowland Concerto Preamplifier  
Jeff Rowland Synergy IIi  
Krell KCT  
Krell Evolution two  
Krell Evolution 202  
Krell Evolution 222  
Krell KAV-250p  
Krell KPS-25SC (inkl. CD-spiller)  
Krell KRC 3  
Krell KRC-HR  
Linn Klimax Kontrol  
Linn Kolektor  
Mark Levinson N° 32  
Mark Levinson N° 320  
Mark Levinson N° 320S  
Mark Levinson N° 326S  
Mark Levinson N° 38  
Mark Levinson N° 380  
Mark Levinson N° 380S  
McCormack RLD-1  
Micromega PA-20
Musical Fidelity A5cr Premplifier  
Musical Fidelity kW Tube (6112) Line Preamplifier  
Naim NAC 112x  
Naim NAC 122x  
Naim NAC 202  
Naim NAC 252  
Naim NAC 282  
Naim NAC 552
NuForce P-9
Parasound Halo P7  
Parasound NewClassic Model 2100 (Member of honor)  
Primare PRE30 PreAmplifier  
PS Audio PCA-2  
Roksan Platinum PR150B Pre Amplifier
Rotel RC-1580
Rouge Audio Perseus  
Sim Audio MOON P-3  
Sim Audio MOON P-5  
Sim Audio MOON P-7  
Sim Audio MOON P-8  
Supratek Chardonnay  
VTL TL-2.5  
VTL TL-5.5  
VTL TL-6.5  
VTL TL-7.5  
Yba Passion 400 PRE  
Yba Passion 600 PRE  
Yba Passion 1000 PRE 

This list was last updated 20.april 2010.

Integrerte Amps:
- Denon PMA-1510AE
Pre-amps:
- Advantage P1 (credit Erik Nyström)