PHONO STAGES / PREAMPLIFIERS

MOFI MOBILE FIDELITY / StudioPhono - MM & MC

Selectable Gain & Loading, MM/MC, Tim de Paravicini Design, Selectable Mono Mode, Subsonic Filter

GAIN MM

40dB or 46dB

LOAD  Z MM

47 k

THD MM / Noise

0.01%

IPT -Capacitance

100 pf

Other 1

Sub-S Filter

GAIN MC

60dB or 66dB

LOAD  Z MC

THD MC / Noise

75 > 47K (6 levels)

0.012%

Key Feature

MONO MODE

Other 2

-

MOFI MOBILE FIDELITY / UltraPhono - MM/MC & HPA

Tim de Paravicini Design, Selectable Gain & Loading, MM/MC, Selectable Mono Mode, Subsonic Filter, HP-Amplifier

GAIN MM

40dB to 46dB

LOAD  Z MM

47 k

THD MM / Noise

0.006%

IPT -Capacitance

100 pf

Other 1

Sub-S Filter

GAIN MC

60dB or 66dB

LOAD  Z MC

THD MC / Noise

75 > 47K (6 levels)

0.0055%

Key Feature

CL-A HPA / 8 ohm <

Other 2

MONO MODE

ELAC PPA-2

All-analog discrete FET gain & EQ stages, RCA or XLR inputs & outputs, fully adjustable cartridge loading on front panel

GAIN MM

TBA

LOAD  Z MM

TBA

THD MM / Noise

TBA

IPT -Capacitance

TBA

Other 1

TBA

GAIN MC

TBA

LOAD  Z MC

THD MC / Noise

TBA

TBA

Key Feature

TBA

Other 2

TBA

SWISSONOR / PP - MM or High Output MM

Urs Frei Design, MC or MM Phono Pre w/ Passive RIAA Equalizer, external 24 V DC PSU, high cap/low ESR capacitors

GAIN MM

Not Communicated

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

Not Communicated

Other 1

-

GAIN MC

Not Communicated

LOAD  Z MC

THD MC / Noise

1 k

Not Communicated

Key Feature

Passive RIAA

Other 2

-

SWISSONOR / Historic 8910 MONO - MI / MM / MC

Urs Frei Design, H-O MC, MI/MM - MONO Phono Pre w/ Passive RIAA Equalizer, 11 selectable EQ Curves

GAIN MM

26 / 29 / 32 dB

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

100/200/320 pf

Other 1

-

GAIN MC

-

LOAD  Z MC

THD MC / Noise

22 > 47K (6 levels)

Not Communicated

Key Feature

Mono - 11 EQ Curves

Other 2

-

SWISSONOR / PPP-3P  - Hashimoto HM-3 SUT w/ MM PHONO STAGE

MC HASHIMOTO Step-Up transformer (HM-3 or HM-X) with Swissonor MM VSOP Phono Stage

GAIN MM

Not Communicated

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

Not Communicated

Other 1

HM-3 B-width :

GAIN MC

32dB or 26dB /TFR

LOAD  Z MC

THD MC / Noise

3 or 12ohm / TFR

Not Communicated

Key Feature

w / VSOP MM Phono

Other 2

15 > 50Khz +/- 1dB

SWISSONOR / PPP-XP  - Hashimoto HM-X SUT w/ MM PHONO STAGE

MC HASHIMOTO Step-Up transformer (HM-3 or HM-X) with Swissonor MM VSOP Phono Stage

GAIN MM

Not Communicated

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

Not Communicated

Other 1

HM-X B-width :

GAIN MC

29dB or 23dB /TFR

LOAD  Z MC

THD MC / Noise

3 or 12ohm / TFR

Not Communicated

Key Feature

w / VSOP MM Phono

Other 2

15 > 100Khz +/- 1dB

QUAD / QC Twenty Four P  - MM / MC PHONO STAGE

MM / MC,  + Line Level Preamp control, Transformer + Relay input circuit, Tim de Paravicini design, 6111WA tube

GAIN MM

1.3/2.6/5.2 mv

LOAD  Z MM

47 k

THD MM / Noise

> 60dB

IPT -Capacitance

-

Other 1

Bandwidth :

GAIN MC

0.13/0.26/0.52 mv

LOAD  Z MC

THD MC / Noise

10 ohm

0.08%  (A-weighted)

Key Feature

4 x 6111WA tubes

Other 2

20 > 20Khz +/- 0.5dB

AUDION / Premier MM Phono  - MM / 6N23P or 6922 Tube 

MM, tube stage, PCB circuit, Class A transformer-less design, ultra high-Q Audion power supplies, optional in twin-mono

GAIN MM

46dB

LOAD  Z MM

47 k

THD MM / Noise

0.015%  No Feedback

IPT -Capacitance

Not Communicated

Other 1

Bandwidth :

GAIN MC

-

LOAD  Z MC

THD MC / Noise

-

-

Key Feature

6922 tube x 2

Other 2

11 > 185Khz +/- 1dB

AUDIO HUNGARY - Qualiton Phono - MM or MC / Tube

MM or MC Tube Phono Preamplifier / External stabilized power supply / Zero feedback passive RIAA stage

GAIN MM

40dB

LOAD  Z MM

47 k

THD MM / Noise

Noise / > 70 db

IPT -Capacitance

Not Communicated

Other 1

Bandwidth :

GAIN MC

62dB

LOAD  Z MC

THD MC / Noise

145 ohm

Noise / > 65 db

Key Feature

6922 x 2 / ECC83 x 4

Other 2

20 > 20Khz +/- 0.3dB

Balanced Audio Technology / VK-P6 SE  - MM/MC / Tube

Ten tubes in a dual-mono phono stage, CCS tube current sources, zero-feedback topology, differential RIAA network

GAIN MM

50 dB

LOAD  Z MM

47 k

THD MM / Noise

73 dB / A-WTD

IPT -Capacitance

100>1000 (17 levels)

Other 1

Six-Pak PSU

GAIN MC

56 dB

LOAD  Z MC

THD MC / Noise

100 to 47k ( x 26 )

71 dB / A-WTD

Key Feature

Phase Switch -  0/180

Other 2

4 x 6C45 & 6922 , 2 x 6SN7

Balanced Audio Technology / VK-P12 SE  - MM/MC / Tube 

Ten tube in dual-mono, Step-Up TFRs, CCS tube current sources, zero-feedback topology, differential RIAA network

GAIN MM

45/60 dB

LOAD  Z MM

47 k

THD MM / Noise

93 dB / A-WTD

IPT -Capacitance

0>1000 (18 levels)

Other 1

Six-Pak PSU

GAIN MC

65/80 dB

LOAD  Z MC

THD MC / Noise

100 to 47k ( x 26 )

76 dB / A-WTD

Key Feature

Phase Switch -  0/180

Other 2

4 x 6C45 & 6922 , 2 x 6SN7

Audio Consulting / Silver Rock Phono  - MC 

Silver MC step up IPT, active 2nd stage, inductive silver RIAA crossover, silver OPTs, 70 dB of gain @ 1KHz.

GAIN MM

43 dB

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

Not Communicated

Other 1

-

GAIN MC

70 dB via SUT

LOAD  Z MC

THD MC / Noise

custom

Not Communicated

Key Feature

Toroidal Silver TFRs

Other 2

Battery Powered

Audio Consulting / Silver Rock Meteor Phono  - MC 

Battery-powered, Silver toroidal IPTs & OPTs, Solid state circuit, dual-mono L-R RIAA via Toroidal cryo silver inductors

GAIN MM

43 dB

LOAD  Z MM

47 k

THD MM / Noise

Not Communicated

IPT -Capacitance

Not Communicated

Other 1

Battery PSU

GAIN MC

70 dB via SUT

LOAD  Z MC

THD MC / Noise

Custom

Not Communicated

Key Feature

Toroidal Silver TFRs

Other 2

8 x Cryo Silver Magnetics

SWISSONOR / PPP-3  - Hashimoto HM-3 SUT 

MC HASHIMOTO Step-Up transformer (HM-3 or HM-X)

GAIN

32dB or 26dB /TFR

-

LOAD  Z

3 or 12ohm / TFR

-

Bandwidth

15 > 50Khz +/- 1dB

Options

-

-

Other

-

-

SWISSONOR / PPP-X  - Hashimoto HM-X SUT 

MC HASHIMOTO Step-Up transformer (HM-3 or HM-X)

GAIN

29dB or 23dB /TFR

-

LOAD  Z

3 or 12ohm / TFR

-

Bandwidth

15 > 100Khz +/- 1dB

Options

-

-

Other

-

-

Audio Consulting  / Silver Rock Meteor SUT / Toroidal 

High tech magnetic materials, Audio Consulting Silver Wire, Substantially shielded, immunity to air born vibrations

GAIN

20dB or 26dB /TFR

-

LOAD  Z

2 or 40ohm / TFR

-

Bandwidth

No communicated

Options

Black Chassis

-

Other

Toroidal TFRs

Silver Cryo Wire