I have spent some years comparing several components in order to evaluate my favourites. This list is not complete but... I do not have a good memory.

In random order.

POWER AMPLIFIERS

Audio Research : classic 30,classic 60, D70 , VT 60 ,VT 70

Classe' Audio : DR3, DR3b, DR3VHC,

Mark Levinson : ML 3 , n.29, n.27, n.23, n.20.5, ML2 (class A 25w), n.33

Krell : KSA50, KMA200, KSA100

Electrocompaniet : ampliwire 250, ampliwire 100

Spectral : DMA50, DMA80

Jadis : JA30 , JA80 , JA200

Graaf : GM200

Quad : Quad II , 405, 303

Leak : TL 10 , TL12 plus , TL12 point one

Radford : STA 35

Conrad Johnson : MV 50, MV 52 , Premier eleven

SAE 2200,2400,x25a

Phase linear 400

Beard : P35 mkII 

Klymo : Beltaine , Kent

AES : One

Rowland : model 7

Mc Intosh : MC 275, MC 30, MC 2125 , MC 2205

Marantz : model 9

Onkio : M 510

Quicksilver : mono amp 60w

YBA : Signature mono

Aloia : ST 240

..............

PREAMPLIFIERS

Conrad Johnson : Premier Seven

Audio Research : SP6a, SP8 , SP9, SP10, SP11

Cello : Palette preamplifier

Rowland : Coherence one

Klyne : SK 5, SK 6

Spectral : DMC 10

Mark Levinson : n.26 ,LNP2

Marantz : model 7, model 1

Jadis : JP 80 mc

Threshold : Fet nine , Fet ten

Dnm : pre

Klimo : Merlin

Quicksilver : preamp

Aloia : pst 140

...........

SPEAKERS

Snell : Type A

Sonus Faber : Extrema , Guarnieri , Electa amator, etc

Vandersteen : 2ci

Thiel : CS 3.5

Quad : ESL , ESL63

Dahlquist :  DQ 10, DQ10 improved , DQ 20 , DQ 30

Audio static : ES300

AR : 9 , 10 pi greco , 3a

Mirage : M 1 , M 3

Rogers : LS3/5a , LS 3/5a 15ohm , LS 5/9

Proac : Tablette , Studio 3

Audio pro : A4-14 mk2

B&W : DM 6, DM 70, 801 , 802, 801nautilus

Gale : GS 401

Magneplanar : MG 2 , MG 3 , TYMPANI 1D

Martin Logan : CLS , SEQUEL

kef: 107 kube,105

Tannoy : westminster, grf memory

Jbl : 4343, 4333, 4311,etc.

Infinity: beta, IRS

.........

TURNTABLES

Linn sondek

Alphason sonata

Oracle delphi

VPI tnt

Roxan xerxes

Thorens td 124,125,126mk3,160

Dual 601,1249,1229,etc

Garrard 301

Well Tempered 

Lurnè j1

Michell Gyrodec

Verdier La Platine

Sota Sapphire

Goldmund studio + t3f

..........

CARTRIDGES

Ortofon mc30,mc20

VDH Grassopher

Spectral signature

Denon dl103

Fidelity Research FR1 MKII

Decca london

Goldring (model ? )

Shure V15III,V15IV,V15V,+ some other 

Linn troika

Stanton 681EEE,881s

Grado signature

Koetsu red signature

...........

I am not going into a detailed description of the CD players that I have listened because I do not remember all the models. Anyway they are as high-end products as the others listed.

 

.....e some photos of the prototypes of the DSL: evolution of 8 years of job.....