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Home > NOBODY 2011/04/03 created
 2017/01/25 updated

What is NOBODY?

NOBODY is my private brand for my self-made audio components.
Note that NOBODY is not a name of any company or organization.

Catch Copy

NOBODY can exceed the edge!
It means only NOBODY can go beyond the edge that no one can exceed.
Am I blowing my own horn? But I do hope NOBODY-branded audio equipment is a cutting edge.

Design Concept

(2014/10/10 added)
The design concept common to all the NOBODY-branded works is described as follows:

Model Numbering System

Every work branded NOBODY has its unique model number as shown below. For example, the first work, which is a power (main) amplifier, is MA-201. A suffix (A, B, C, ...) is added after the equipment is greatly improved. MA-201 has been improved three times, so the current model number for it is MA-201C.
First two letters
specify the type
 Third letter First digit of the
subsequent number 
specifies category
 Last two digits of the
subsequent number
Suffix
CD: Channel divider
HA: Headphone Amp
IC: Interconnect Cable
MA: Power (Main) Amp
PA: Preamp
PS: Player System
SS: Speaker System

(hyphen)
1: Player
2: Amplifier
3: Loudspeaker
4: Accessary 
Serial number of
the component 
Revision:
A, B, C, ... 


Equipment

Model  Type  Description  Status  Link 
MA-201
MA-201C
Tube power amp
 
EL34 UL PP
30W + 30W 
Made in 1974
Revised in 1995, 2004
and 2009
Used in Gaudi as
woofer amp
Details 
PA-202
PA-202
Tube preamp  CR-NF type EQ
NF type tone control
 
Made in 1974
Discarded in 1980
Overview 
PA-203
PA-203
Tube preamp  Passive type EQ
Flat stage 
Made in 1980
Discarded in 2003
Details 
PS-104
PS-104 
Analog disc player  Direct driven turn table 
Static balanced tone arm
MC cartridge
Made in 1982
Used in Gaudi 
Details 
MA-205
MA-205 
Tube power amp
 
6GW8 triode PP 
3.6W + 3.6W
Made in 1982
Revised in 2006
Used in 2nd system 
Details 
CD-206
CD-206B
Three-way
Channel divider 
(network)
Solid state
Crossovers: 800Hz(18dB/oct),
8000Hz(12dB/oct)
Made in 1982
Revised in 1996 and 1997
Discarded in 2004
Details 
SS-307
SS-307
Three-way
Speaker system 
30cm/12" woofer
10cm/4" mid-range/full-range
Horn tweeter 
Made in 1982
Revised in 1993
Discarded in 2001
Overview
MA-208
MA-208
Tube power amp
 
6BQ5 UL PP 
10W + 10W
Made in 1999
Used in Gaudi as
tweeter amp
Details 
SS-309A
SS-309A 
3-way
Speaker system 
Horn tweeter
Wood horn midrange/tweeter
30cm(12") woofer
Made in 2001
Upgraded in 2012
Used in Gaudi 
Details 
PA-210 Simplicity
PA-210 Simplicity
Tube preamp  Passive type RIAA EQ
Open loop Flat stage 
Made in 2003
Used in Gaudi
Details 
CD-211A
CD-211B A-NET
3-way
Channel divider
(Network)
Op amp: OPA627, LF411 
Crossovers: 800Hz(18dB/oct),
6800Hz(18dB/oct)
Made in 2004
Revised in 2012, 2015
Used in Gaudi
Details
SS-312
SS-312
Single driver
Speaker system 
10cm/4" full-range driver  Made in 2006
Used in 2nd system
Details 
MC head amplifier HA-213
HA-213 
MC head amp  Op amp: LT1115, LT1097 Designed as headphone amp in 2004
Re-designed and built as MC head amp in 2010-11
Used in Gaudi
Details
PE-114 Ptit
PE-114 Petit 
Phono equalizer Op amp: LT1115, LT1010CT
Gain: 40/60dB
Under design Details
MA-215 Arabesque
MA-215 Arabesque 
Solid state stereo power amp  IC: LM3866
1W+1W (cont.)
20W+20W (music)
Designed in 2014
Built in 2015
Used in Gaudi
Details 
 



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