Meishu Line
9 watt Class A single-ended 300B line only integrated amplifier, 5 inputs, no tape loop. Valve complement: 2 x 300B, 2 x 5687, 1 x 6SN7, 2 x 6X5, 1 x 5U4G

Meishu Line Silver
9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply. Silver version adds Audio Note™ tantalum resistors, copper foil signal capacitors, Black Gate electrolytic capacitors in many places and HiB copper wired double C-core output transformers. Valve complement: 2x 300B, 2x 5687, 1x 6SN7, 2x 6X5, 1x 5U4G

Meishu Line Silver Signature
As Meishu Line Silver, but with more Black Gate electrolytic capacitors, Audio Note™ silver wiring and copper wired thin lamination R36 double C-core output transformers. Valve complement: 2x 300B, 2x 5687, 1x 6SN7, 2x 6X5, 1x 5U4G.

Meishu Phono
9 watt Class A single-ended 300B MM phono integrated amplifier, 5 inputs, no tape loop. We have moved to the M2 phono stage so the valve complement is: 2x 300B, 2x 5687, 1x 6SN7, 1x ECC82, 1x ECC88, 2x 6X5, 1x 5U4G.

Meishu Phono Silver
9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply. with Audio Note™ tantalum resistors, copper foil signal capacitors, Black Gate electrolytic capacitors in many places and HiB copper wired double C-core output transformers. We have moved to the M2 phono stage so the valve complement is: 2x 300B, 2x 5687, 1x 6SN7, 1x ECC82, 1x ECC88, 2x 6X5, 1x 5U4G.

Meishu Phono Silver Signature
As Meishu Line Silver, but with more Black Gate electrolytic capacitors, Audio Note™ silver wiring and copper wired thin lamination R36 double C-core output transformers. We have moved to the M2 phono stage so the valve complement is: 2x 300B, 2x 5687, 1x 6SN7, 1x ECC82, 1x ECC88, 2x 6X5, 1x 5U4G.

***Manual Meishu Line | Meishu Line silver | Meishu Line Silver Signature

Latest version of Meishu Amplifier (2018 version)

-Full Tantalum 1W and 2W resistors;

-Full Audio Note KAISEI polar and Audio Note Standard capacitors in all main power supply, heater circuit and cathode bypass;

-IHiB Double C-Core CU/CU windings.

-Full Audio Note copper foil signal capacitors

 

 

 

 


211 SE integrated amplifier, 5687 input stage driving an in-house designed and made 1:2 copper wired driver transformer on a double HiB C-core, standard Level 3 components, Beyschlag resistors, etc., in-house designed and made copper wired double HiB C-core output transformer, 2 x NOS 5R4WGB rectifiers, HiB double C-core mains transformer.

 

***Manual JINRO Shochu

 

 

 

211 SE integrated amplifier, original NOS Telefunken 6463 input stage driving an in-house designed and made 1:2 Audio Note™ silver wired driver transformer on a double AN-Perma 50 nickel C-core, standard Level 5 components, Audio Note™ 2 watt Tantalum resistors, Black Gate™ electrolytics, in-house designed and made Audio Note 99.99% pure silver wired double AN-Perma 50 nickel C-core output transformer, 2 x NOS 5R4WGB rectifiers, HiB double C-core mains transformer.

 

***Manual ONGAKU Kensei

 

 

 

 

Quest

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made I-E core output transformer, 2 x 300B, 2 x 6SN7, 2 x 5U4G,

Quest Low Gain

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made I-E core output transformer, 2 x 300B, 2 x 6J5 metal, 2 x 5U4G,

Quest Silver

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made IHiB double C-core output transformer, 2 x 300B, 2 x 6SN7, 2 x 5U4G,

Quest Silver Low Gain

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made IHiB double C-core output transformer, 2 x 300B, 2 x 6J5 metal, 2 x 5U4G,

Quest Silver Signature

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Audio Note™ Tantalum resistors, Cerafine & standard electrolytic capacitors, in house made SHiB double C-core output transformer, 2 x 300B, 2 x 6SN7, 2 x 5U4G,

Quest Silver Signature Low Gain

Level Three, 9 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Audio Note™ Tantalum resistors, Cerafine & standard electrolytic capacitors, in house made SHiB double C-core output transformer, 2 x 300B, 2 x 6J5 glass, 2 x 5U4G,


It is important to understand that sonically it is desirable to have as much gain available in the circuit as possible, as the wider the dynamic gain window is the better the amplifier/system handles wide dynamic signal levels (contrary to popular belief, dynamics have NOTHING to do with power, it is a function of how much each stage in a circuit’s gain window limits the dynamic peaks), having very high gain and therefore sensitivity in a power amplifier creates problems with background noise levels.

All Audio Note™ power amplifiers have heavily silver plated RCA input and speaker terminals with 4 & 8Ohm output impedance.

Despite the low power output of all out power amplifiers, their ability to drive speakers with even quite low efficiency, there is naturally a limit to how loud it is possible to play, however, even 86dB efficient loudspeakers can be used in smaller rooms.

 

***Manual QUEST Silver

 

 

 

 

Conquest

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made I-E core output transformer, 4 x 300B, 2 x 6SN7, 2 x 5U4G,

Conquest Low Gain

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made I-E core output transformer, 4 x 300B, 2 x 6J5 metal, 2 x 5U4G,

Conquest Silver

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made IHiB double C-core output transformer, 4 x 300B, 2 x 6SN7, 2 x 5U4G,

Conquest Silver Low Gain

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Beyschlag metal film resistors, standard electrolytic capacitors, in house made IHiB double C-core output transformer, 4 x 300B, 2 x 6J5 metal, 2 x 5U4G,

Conquest Silver Signature

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Audio Note™ tantalum resistors, Cerafine & standard electrolytic capacitors, in house made SHiB double C-core output transformer, 4 x 300B, 2 x 6SN7, 2 x 5U4G,

Conquest Silver Signature Low Gain

Level Three, 18 watt single-ended Class A no feedback triode mono amplifiers, valve rectified choke power supply, Audio Note™ copper foil signal capacitors, Audio Note™ tantalum resistors, Cerafine & standard electrolytic capacitors, in house made SHiB double C-core output transformer, 4 x 300B, 2 x 6J5 glass, 2 x 5U4G,

 

***Manual CONQUEST Silver | CONQUEST

 

 

The Audio Note™ P4 Balanced


Transformer Coupled Mono Power Amplifiers
The Ultimate Solution to Copper Wired Audio Amplification!

 



The Development & Origins
It took us 6 years to research and develop the necessary materials know how (choice of core material in this setting is hyper critical and influences sound enormously it is very easy to end up with something that sounds mushy and veiled) and transformer designs to achieve a completely “invisible” (note here that a correctly designed transformer is a virtual component, because whilst it is there physically, it is “not there” in terms of signal influence, all it should do is convert or “transform” the signal impedance, current voltage to something that will drive the next stage properly) magnetic coupling from input to output, we settled on the VT25/10Y directly heated triode as a first gain stage, as its sonic character and electrical characteristics compliments the VT4-C/UV211 very nicely.
The end result is a circuit with 3 transformers, two super linear Directly Heated Triode gain stages and two Audio Note™ 2 watt tantalum resistors in the signal path, with no signal capacitor in sight, try improving on that for ultimate simplicity!
The power supply design is again the simplest possible with a valve rectified (5R4WGB) choke coupled smoothing and the lowest possible capacitance.
In short, nothing but nothing will ever come along that beats this, ever, put that in your calendar for 2020!
So if you are looking to make your “last and final” amplifier purchase this is the only place to start.

Now to the P4 Balanced which basically follow the GAKU-ONs formula exactly except for the fact that it is all copper wired, uses SHiB C-cores instead of 50% Nickel and has the 5687 as a first gain stage and a parallel pair of 300Bs as the output valves with a 5U4G choke smoothed rectifier for the HT, Audio Note™ tantalum resistors and standard capacitors everywhere.
The front panel is meant to reflect the simplicity of the content of the box, available in brushed clear aluminium with a silver or black AN badge or in black acrylic with a gold or black AN Badge.
The rear panel of the P4 Balanced showing the 4 and 8 Ohm speaker connectors, on/off switch, fuse holder and mains inlet.
Aerial view of the internals, note the special material of the circuit board which has everything hard wired underneath it.
Side view of open P4 Balanced showing power supply side with mains transformer at the back and the small power supply PCB with the 5U4G rectifier, simplicity is the name of the game in amplification that does not get in the way of the music!
Direct side view of the P4 Balanced showing the large SHiB double C-core output transformer, the small mumetal can containing the input transformer ad the copper shrouded SHiB double C-core, all the transformers are designed, modelled, prototyped and wound in house at the Audio Note™ factory based in Hove in the UK.
In the centre of the chassis the main board holding the two 300Bs and the single 5687 driver valve, the 5U4G rectifier is seen looming in the back.
Close up of the pretty seriously over dimensioned double C-core output transformer, which allows the enormous dynamic swings the circuit is capable of to pass unrestricted.
The P4 Balanced will drive most speakers of 89dB or higher efficiency to very respectable levels in a normal room setting, depending on how one chooses to measure the output power ranges from 12 – 24 watts of Class A, but because of the unrestricted linearity of the circuit the authority of the dynamic presentation is unlike that of any amplifier regardless of power as is the separation and authenticity of timbre.
So if you are looking to make your “last and final” amplifier purchase this is the only place to start, better is only available if you move up the Audio Note™ Levels’ materials “ladder” to ever more silver wire, Black Gates and nickel cores.
As a minimum the P4 Balanced should be used with an Audio Note™ M3 pre-amplifier, which allows fully transformer coupled balanced connection, a precondition of taking full benefit of the P4 Balanced’s abilities.

 

***Manual P4 BALANCED

 

 

 

The ANKOUR/II is a true, fully balanced design, supplied as a pair of mono amplifiers. They utilise the finest components including Audio Note (UK) tantalum resistors, a mix of Cerafine and high grade electrolytic capacitors, our own IHiB double C-core output transformers and fully balanced 1:3 input transformers for the 600 Ohm balanced XLR inputs.

The circuit is fully transformer coupled - once again using our own superb custom transformers - and each amplifier uses a 6V6GT to drive a pair of 211 output triodes in parallel single ended configuration to produce a devastating 45 watts of pure class A triode power. As one would expect, the amplifiers are valve rectified, using a pair of the highly regarded 5R4WGB valves per chassis.

The ANKORU/II has been designed to fulfil all Level Three criteria:
-Pure Class A operation
-Zero Negative Feedback
-Single Ended output stage
-Valve rectification
-Directly heated triode operation

-Materials and component quality

 

***Manual ANKORU-II

 

 

 

 

KEGON

Level Five, 22 watt Class A parallel single-ended no feedback mono triode power amplifiers, component quality as KAGEKI, valve compliment, 4 x WE300B (when available), 2 x NOS 5692, 2 x NOS 5U4G

KEGON Low Gain version

Level Five, 22 watt Class A parallel single-ended no feedback mono triode power amplifiers, component quality as KAGEKI, valve compliment, 4 x WE300B (when available), 2 x NOS L63/CV1067, 2 x NOS 5U4G

 


KEGON Balanced

Level Five, 22 watt Class A parallel single-ended no feedback mono triode power amplifiers with ultra simple fully transformer coupled circuit topology with in-house designed and wound input, driver and output transformers, all Audio Note™ silver wired, AN Perma 50 double C-cored, 2 watt Audio Note™ tantalum resistors, Black Gate™ WKz and NH type capacitors in power supply, Black Gate™ N-type decoupling capacitors, no signal coupling capacitors whatsoever (!), valve compliment, 4 x 300B, 4 x NOS 5R4WGB, 2 x NOS VT25/10Y

 

***Manual KEGON

 

 

 

GAKU-ON™

Level Five, 45 watt Class A parallel single-ended no feedback mono triode power amplifiers with ultra simple fully transformer coupled circuit topology with in-house designed and wound input, driver and output transformers, all Audio Note™ silver wired, AN Perma 50 double C-cored, 2 watt Audio Note™ tantalum resistors, Black Gate™ WKz and NH type capacitors in power supply, Black Gate™ N-type decoupling capacitors, no signal coupling capacitors whatsoever (!), valve compliment, 4 x NOS VT4-C/211, 4 x NOS 5R4WGB, 2 x NOS VT25/10Y

 

***Manual GAKU-ON

 

 

Notes: Audio Note (UK) Ltd. reserve the right to change, modify, add to, or remove any of the content (was originated from website www.audionote.co.uk) at any time without prior notice. Further, images on this site may differ from current models or specifications.