AUDION

AUDION STERLING ANNIVERSARY SERIES

The Sterling Anniversary Series represent Audion’s best entry level products.

 

  • They are priced very, very competitively and outperform anything at their price points.

  • The Sterling Series includes 3 Stereo Amplifiers and 2 Monoblocks offering progressively higher power output, and designed respectively around the EL34, the KT88 and the KT120 tube types.

  • All 3 Stereo Amplifiers are Class A types, featuring the implementation of the Ultralinear Output Topology, which offers the best of SE/Triode and PP approaches. The two Monoblock amplifiers are pure PP and PSE designs respectively.

 

Standard Features and Options

 

  • Alll amplifiers include a volume attenuator, whether they are Streo Power amps or Monoblock amps.

  • This standard volume control feature essentially makes them "Integrated" amps, but in their basic versions they are "purist", and are thus delivered with one single-ended source input.

  • However, and in addition to the standard volume attenuator, all aforementioned amplifier types can be ordered with the following 2 options :

    • All Sterling and Silver Knight Series amplifiers : Optional Upgrade to 5 single-ended Inputs plus 1 Output

    • A very high quality European Remote Volume Control unit

 

 

 

 

AUDION Sterling 34   SE / Class A Integrated



The Sterling 34 is a good entry level Class A power amplifier. It is sonically very airy and delivers good response. It sounds far better than its price suggests, in most cases competing with products 1.5 to 2 times its price point.

 

This Audion amp is hard wired (Air Wired©) point to point using higher grade components and larger, hand-built, Audion-wound output transformers (EI96). It is auto biased, uses a small amount of feedback in the design, and delivers a conservative 12 CLEAN watts into 8 ohms, which compares to competitors boasting 24-30W.

 

A very conservatively rated power amplifier, it is very musical straight out of the box. 

 

The Sterling 34 is suited for use with loudspeakers of 89db or better efficiency.

 

Power: 2 x 12 Watts Class A into 8 Ohms at 120V AC
Load: 8 Ohm Nominal

Distortion @ 1Watt: <0.1% No Feedback
Frequency Response: 14 to 40KHz ±1 db
Sensitivity: Variable >200mV Full output
Noise: < (CCIR) – 85 db
Consumption: 140 Watts

Grounding :  Ground Lift Switch 
Tubes: 2 x EL34, 2 x NOS 6H1N    (MII PCB- 1 x NOS 6H1N & 1 x NOS 5687) 
Size - 16.5in deep, 9in wide and 7.4in tall - Less tubes 
Weight 31 lbs
Fuses - Power 4A / 120V  HT 1A / 120V

Warranty: 2 years. Tubes 6 months.

 

MRSP  $3,499.00   EL 34 Anniversary / Point-to-Point

MRSP  $2,499.00   EL 34 MKII / PCB

    Options 

5 Inputs / 1 Output    $600.00

​​Remote Volume control  $670.00

RAVE REVIEW in The Absolute Sound, March 2012 issue by Dick Olsher calling it "highly recommended" and a "Music Lovers Delight" 

AUDION Sterling KT88   SE/ Class A Integrated



The Sterling KT88 is a Class A power amplifier. Its sounds competes with products 1.5 to 2 times its price point.

 

This Audion amp is hard wired (Air Wired©) point to point using higher grade components and larger, hand-built, Audion-wound output transformers (EI96). It is auto biased and delivers a conservative 18 CLEAN watts into 8 ohms, which compares to competitors boasting 36-40W.

 

This larger output power amp is better suited for more difficult loads. The KT88 is a robust tube that has a good overall sonic performance. The amp can "roll" EL34 and 6V6 tubes as well.

 

This Audion amp is suited for use with loudspeakers of 89db or better efficiency



Power: 2 x 18 Watts Class A into 8 Ohms at 120V AC
Load: 4 – 8 Ohm Nominal
Distortion @ 1Watt: <0.1% No Feedback
Frequency Response: 14 to 40KHz ±1 db
Sensitivity: Variable >200mV Full output 
Noise: < (CCIR) – 85 db
Consumption: 180 Watts 

Grounding :  Ground Lift Switch
Tubes: 2 x KT88, 2 x 6H1N or 2 x 6922
Size: 16.5in deep, 9in wide and 7.4in tall - Less tubes 
Weight: 31 lbs
Fuses - Power 4A & 1A / 120V

Warranty: 2 years. Tubes 6 months.

 

 

MRSP  $3,999.00

    Options 

5 Inputs / 1 Output    $600.00

​​Remote Volume control  $670.00

AUDON Sterling KT88 Monoblock Amplifiers / PP & PSE



The Sterling KT88 Monoblock amplifires come in two variants -- PP and PSE.  Both variants are Class A designs.

 

As with all other Audion components, they are hard wired (Air Wired©) point to point using higher grade components and larger, hand-built, Audion-wound output transformers (EI96).They are auto biased and use a small amount of feedback in the design.

Both versions deliver a very musical presentationl with smooth transients, good signal handling and tight response curves.

 

The PP push pull version is designed for greater power while losing little of the finesse of the PSE. The PPs deliver a conservative 45 CLEAN watts into 8 ohms, which compares to competitors boasting 70-80W. The PP version is suited for use with loudspeakers of 83-85db or better efficiency. 



The PSE version is designed for greater power while retaining the finesse of the SE sound. The PSEs deliver a conservative 30 CLEAN watts into 8 ohms, which compares to competitors boasting 55-65W. The PSE version is suited for use with loudspeakers of 85db or better efficiency. 



Power PP : 45 Watts Class A into 8 Ohms at 120V AC 

Power PSE : 30 Watts Class A into 8 Ohms at 120V AC 

Load: 4 – 8 Ohm Nominal

Distortion @ 1Watt: Distortion @ 1Watt: <0.1% No Feedback

Frequency Response: 14 to 40KHz ±1 db

Sensitivity: Variable >200mV Full output 

Noise: < (CCIR) – 85 db

Consumption: 160 Watts

Grounding :  Ground Lift Switch 

Tubes: 2 x KT88, 2 x 6H1N or 2 x 6922 per mono

Size - 16.5in deep, 9in wide and 7.4in tall - Less tubes

Weight 24.25 lbs per mono-block

Fuses - Power 4A / 120V

Warranty: 2 years. Tubes 6 months.

 

MAP - PP /   $5,582.00 / pair     

MAP - PSE / $5,976.00 / pair - Special $ 5,676.00 ( valid > end 9/2018)

AUDION Super Sterling   KT120 SE/Class A

 

AUDION Super Sterling   KT150 SE/Class A

​

This is quite stunning. The world's first Single Ended KT120, and as of September 2018, the first Single Ended KT150 amplifier. Every designer said it couldn't be done. This tube wasn't designed for it and on and on. After a year Audion did it and the sound is amazing. The sweetness of the EL34 with twice the punch of the KT88. A perfect marriage. Pure Class A.

 

The price is an introductory price so get your amp at a great price while it lasts.

 

 

Of course its available with the optional remote and coming is the PSE and PP versions. Enough power to melt the walls. Yet, still stay in the superior sonics of Class A.

 

The Audion Super Sterling 120 & 150 use Tungsol KT120 / 150 pentode tubes. These deliver approx. 24 watts / 26W into an 8 ohm load. Therefore, it has the power of competitors boasting 35-45W. The amp has been designed to work with lower efficiency loudspeakers from approx 86db and up. 



Power KT120 SE:  2 x 24 Watts Class A  into 8 Ohms 

Power KT150 SE:  2 x 26 Watts Class A  into 8 Ohms 

Load:    8 Ohm Nominal

Distortion @ 1Watt:  <0.1% No Feedback

Frequency Response: 14 to 40KHz ±1 db

Sensitivity:  Variable >200mV Full output      

Noise:  < (CCIR) – 85 db

Consumption:   240 Watts

Grounding :  Ground Lift Switch

Tubes:  2 x KT120 or 2 x KT150 , 2 x 6H23N

Size: 16.5 in deep, 9 in wide and 7.4 in tall - Less tubes Weight 31 lbs

Fuse Rating: Pwr 3.15A/125V HT 1A/125V

Warranty: 2 years. Tubes 6 months.

 

MAP   $4499.00  --  KT120 SE 

MAP   $4799.00  --  KT150 SE 

    Options 

5 Inputs / 1 Output    $600.00

​​Remote Volume control  $670.00

STERLING SERIES TUBES

6922 / 6N23P / 7308 / E88CC / 6DJ8 / CCa / PCC88

 

Implementation:  Audion Super Sterling KT120

 

The tube rollers Dream Tube !  The 6DJ8 is a miniature 9-pin medium gain dual triode vacuum tube. It is distinguished by its very high transconductance, mostly the result of its frame grid construction. 

 

Developed by Amperex, the American division of Philips in 1958. In Europe, it was developed by Philips in the Netherlands under European designation ECC88. The series-string version 7DJ8 / PCC88 was also introduced at the same time. The 7308 is a premium 6922.

 

Although not originally designed for the purpose, it became popular in hi-fi audio amplifiers. An industrial (improved/higher ratings) version of the tube was designated 6922 / E88CC between 1959 and 1961. Siemens introduced their own super ECC88 / 6DJ8 at the same time under CCa type. New Old Stock (NOS) 6DJ8s and ECC88s produced in the past by major American or West European vacuum tube manufacturers (such as Philips or Amperex) remain extremely popular with and highly sought by audiophiles. A version (direct equivalent) of this tube was also produced in the Soviet Union as 6N23P (Russian: 6Н23П) and in China as 6N11.

 

The Russian NOS 6N23P is used extensively throughout the Audion Line as an Input / Driver tube.

 

Basic data: Uf=6.3V, If=300 mA, uM=33, Ia=15 mA, S=12.5 mA/V, Pa=1.7 W

6N1P (6H1N)

 

Implementation:  Audion Sterling KT88 Stereo and Monoblock amplifiers, Audion Sterling EL34

 

The 6N1P (Russian: 6Н1П) is a NOS Russian-made miniature 9-pin medium gain double triode vacuum tube intended for use as a line audio amplifier and cathode driver.

 

A ruggedized/extended ratings version of the tube is designated 6N1P-EV (Russian: 6Н1П-ЕВ).

 

It has currently found a use as a driver tube because of its excellent low distortion and low noise characteristics. The tube is still being manufactured by the "Voshod" plant in Kaluga, Russia.

 

The 6N1P's sonic character is crisp and energetic. its overall presentation is bold and full bodied in the mid-band. Highs are detailed, but not overly exhagerated. and base line definition is well articulated and solid.

 

The 6N1P distinguishes itself due to its higher input sensitivity and amplification factor, which makes it partricularly compatible in amplifiers driving low sensitivity / low impedance loudpeakers.

 

Basic data: Uf=6.3V, If=600 mA, uM=35, Ia=7.5 mA, S=4.35 mA/V, Pa=2.2 W

EL 34 / 6CA7 / 6P3S [6N3C] / KT77

 

Implementation:  Audion Sterling EL34

 

The EL34, an 8-pin Pentode, was introduced in 1953 by Mullard and its parent company Philips and, although no longer made by them, is manufactured by JJ Electronic (standard on the Audion Sterling EL34), Shuguang, Svetlana and Reflector, amongst others. Some firms make a related tube called an E34L which is rated to require a higher grid bias voltage, but which may be interchangeable in some equipment.

 

The American RETMA tube designation number for this tube is 6CA7. The Russian substitute is 6P3S (Cyrillic: 6П3C).

 

The EL 34's sonic character is bold and energetic. its overall presentation is dynamic and full bodied and smooth in the mid-band. Highs are detailed, but not overly exhagerated. and base line definition is well articulated and solid.

 

 

Basic data: Uf=6.3V, If=1.5A, Ua=250, Ia=100 mA, S=11 mA/V, Pa=25 W, Ri=15Ko

KT88 / 6550 

 

Implementation:  Audion Sterling KT88 Stereo Amplifiers and KT88 Monoblocks

 

Marconi-Osram Valve Co. introduced the KT88 in 1957, and its Genalex Gold Lion KT88 became known as "King of Power Tubes." The KT88 is a larger version of the KT66 that features higher power and very low distortion. The KT88 can be used interchangeably with its American rival, the 6550. 

 

Current production of the KT88 is limited to Shuguang (China), JJ Electronic (Slovakia) and Russia-manufactured by New Sensor Corporation. NOS examples in good condition are extremely rare and quite expensive.

 

The KT88 is a Beam power valve with an anode/plate dissipation [originally] of around 35 watts, it is sometimes referred to as a pentode by some people, but in fact the clue is in the title "KT" which stands for "kink-less tetrode" The main feature differences in the Kink-less Tetrode compared to the Pentode [and early Tetrode's] was the use of two shaped metal plates that ran the length of the grids and was placed outside the grid support rods but within the anode cylinder. The effect of these plates was to confine the electron flow to the path through the grid wires by forming an electrostatic field when connected to a low voltage. This had the effect of repelling secondary electrons back to the anode' and by not having the secondary electrons reach the screen grid; the kink in the Tetrode curve was eliminated. Thus the Kink-less Tetrode was born. In short the" KT" denotes a beam power valve with lower distortion: and a more linear characteristic than traditional power Tetrodes and Pentodes.

 

The KT88 is one of only a few power valves that was specifically designed and developed for use in high quality audio equipment! The JJ version is one of the best quality new production tubes but it also has certain sonic qualities that most tube and solid state audiophiles alike crave, e.g. dynamic detail, good mids, etc. Also, it has a very unique bass characteristic; the clue to this is the mention of 'solid state'.

 

Basic data: Uf=6.3V, If=1.6A, Ua=250, Ia=140 mA, S=11.5 mA/V, Pa=42 W, Ri=12Ko

KT120

 

Implementation:  Audion Super Sterling KT120 

 

 With a plate dissipation of 60 watts, the Tung-Sol KT120 was the most powerful tube in the 6550/KT88/KT90 family. This, until the recent introduction of the KT150. A pair of these tubes in push-pull configuration can deliver power levels of 150 Watts or more. When it's run in circuits designed for 6550/KT88/KT90 tubes, the KT120 resists being overdriven and reliably delivers peak power.

 

The KT120 has a taller glass bottle, longer internal plate structure, and much larger control grid cooling fins than current production KT88 tubes. Because the KT120 draws 100-300 mA more filament current than a standard 6550/KT88, care must be given to ensure that amplifiers have the additional filament headroom to power these tubes. This new production Tung-Sol tube is manufactured in Russia for New Sensor.

 

The KT120 tube is one of the more exciting developments in new production vacuum tubes. Generally speaking it is a drop in replacement for 6550, KT88 and KT90 tubes, as long as the larger bottle fits in the chassis. This tube also draws more filament current (100-300 mA more per tube) than 6550/KT88/KT90 tubes do, so one needs to be sure that the power supply can handle the increased demand. 

 

The KT 120 delivers improved bass response and increased output. The reason for this stronger response is obvious when one considers its test results. In test, new production 6550 and KT88 tubes range from 90-140% of the expected value for mA and Gm. Under the exact same operating conditions (e.g. 500v plate, 300v screen, -30.5v bias) the KT120 rarely tests lower than 125% and can test as high as 185%.

 

In Ultralinear/Triode mode, as is the case in the Audion Super Sterling KT120, this tube delivers 24W into 8 ohms.

 

Basic data: Uf=6.3V, If=1.8A, Ua=400, Ia=150 mA, S=12.5 mA/V, Pa=60 W, Ri=12Ko 

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