During my work of promoting western speaker brands in Chinese market in the past years which are still ongoing, I came across [Analog Sound™] by Line Magnetic in our co-exhibiting shows and events there. Not only myself, but also the highly experienced designer /audiophile / ex music producer of a prestige western speaker brand, are more than astonished for what a magical sound the [Analog Sound™] line of tube amplifier can re-produce!
I decide that they must be known to the western world – it’s too good a treasure to be hidden in the east, and buried among the ‘Chi-Fi’ crowd.
[Analog Sound™] IS NOT A ‘ME-TOO’ TUBE AUDIO. It is ‘Western Electric’ transformer technology on modern steroid – end result? It produces ‘Heavenly Sound’.
About AS-133:
This [Analog Sound™] AS-133 full tube pre-amp combines the legendary Western Electric circuitry and many versatile features that allows it to be paired with nearly all kinds of power amps.
It uses two well known triode tubes – 6SN7 and 2A3 to bring you the best of tube sound. It is very rare to see tube pre-amp using 2A3 tube – because it has always been a big design challenge to utilize large triode tubes in a pre-amp design. Most tube pre-amps on the market uses small 9-pin signal tubes such 12AX7 etc. But once the design challenge is overcome, the reward of using large direct heated triode tubes such as 2A3 is also huge. It brings in unbelievable tonal control, spacious sound, extended high frequency and a to-die-for full bodied mid-range.
Tube rectifier tube 5U4G further brings you deep bass, and extra warmth of tube sound. It can be substituted with 274B or NOS U52 tube type.
Front meter can detect each 6SN7 tube status to ensure aging tubes are replaced timely and the amp stays in top shape at all time.
(2) legendary Western Electric Replica 618 input transformers are used in the input stage to create a real full balanced input stage. For those who know about all the legendary sound of Western Electric equipment from the golden tube era, you will know all the hype about this WE 618 transformer – after nearly a century, it still cannot be sonically topped by modern transformers.
AS-133’s unique circuit design has been enhanced to achieve near 1Mega hz upper frequency – it is an unparalleled audio experience!
It has extra range of gain factors settings – from 2.5x, 5x, 7.5x, 10x, 12.5x to 15x, total 6 gain settings, compared to most tube pre-amp only has one fixed gain at 10x, or less. AS-133 is much more adaptable with various power amps.
The additional 20-step output volume control: it is used in combination with the 6 gain factor settings previously mentioned so that you have nearly endless settings to suit your music, system and listening preference.
Input gain level control – manual adjustment or by the provided remote control. It ranges from mute all the way to infinite.
Overall, this is a top quality tube preamp with very unique design. It can make your high end system really perform at a whole new level with all the user-controlled settings.
Specifications:
Input Impedance: 100KΩ/600Ω
Output Impedance: 50KΩ
Sensitivity: 1V
Gain: 15x,12.5x,10x,7.5x, 5x ,2.5x
Signal to Noise Ratio: more than 90dB
Frequency Response Range: 10Hz~98KHz ±3dB
Total Harmonic Distortion: 0.3%
Power Consumption: 62W
Dimension: 485mm W x 240mm H x 460mm D (19.1″ W x 9.5″ H x 18.1″ D)
Weight: 22Kg / 48 lbs
Tubes: 6SN7*2/ 2A3*2 / 5U4G*1
Pic 1: AS133 front view
pic 2: AS133 mounted in rack
pic 3: AS133 rear panel view
pic 4: AS133 front meter close-up view
pic 5: AS133 – tube layout
pic 6: AS133 tube rolling options: Linlai E-2A3; GF Special Edition 6SN7SE Globe shape (bottom left), or Linlai E-6SN7 (bottom right), Linlai E-274B.
Note: the 2 different brands of 6SN7 shown in the above picture is for illustration of tube dimension space-fitting only. You should NOT use a mixed pair of tubes under any circumstances.
pic 7: remote control stored in faceplate:
Note: It is not spring loaded. You only need to hold the remote and pull it straight out. If it feels tight to pull out, use a cloth to cover the remote end, then use a plier to gently pull it out.
pic 8: remote control battery installation direction – positive in, negative out. Battery type: (1) CR123A 3V Lithium Battery (not included due to air shipping restrictions of no battery in ANY air shipment ex China.)
5-year Extended Warranty
Yes, No
Brand
[Analog Sound™] by Line Magnetic
[Analog Sound™] is a special flagship series by Line Magnetic's Western Electric Replica design studio. Combine Western Electric transformer technology and modern features to bring you an 'out of this world' tube sound experience!
Read more about Who is [Analog Sound™] by Line Magnetic
Payment method: As all [Analog Sound™] products are available by factory direct from the factory in China only, we can only accept wire transfer payment method in order to place factory order back to back. We do NOT accept Paypal or credit card payment methods for this line of products.
Manual
Shipping & Warranty
WARRANTY
Grant Fidelity branded:
Warranty of All 'new in box' products bearing 'Grant Fidelilty' brand is provided by Grant Fidelity in Canada. 12-month on audio equipment. 90 days on vacuum tubes.
Manufacturers branded:
Factory 12-months parts warranty is provided and administrated by Grant Fidelity.
Labor Warranty of all manufacturers Factory-Direct drop shipping products in western countries is NOT provided by Grant Fidelity and not included in our product listing price.
However, after receiving delivery of your order, please contact us to receive factory provided schematics for your future repair needs.
Tube audio equipment usually can be serviced by reputable tube amp service technicians in western countries. If special parts are needed from the manufacturers, we will coordinate the request on behalf of you but parts cost / shipping will be born by yourself. Please note we are not able to control and / or guarantee availability of parts from factories, especially after certain number of years when products have been discontinued. But we will at least do our best to try with the factory for you.
Shipping related damages must be reported to us within 3 days of receiving delivery, along with claim reports filed with carrier, and supported by dated photos.
SHIPPING
Audio Equipment:
Diagram below describes how 'factory direct drop shipping' works:
Unless otherwise specified, audio equipment once ordered from our webstore (i.e. order has been paid in full) will be produced by manufacturer typically with 2-3 weeks lead time, especially those with custom 115V for North America. Then the order will be drop shipped from manufacturers to non-Canadian buyers' confirmed addresses directly, without passing through our location in Canada. Carrier tracking numbers will be provided once available.
Canadian orders have options to first arrive to our location in Alberta then forward on, or directly to buyers' confirmed addresses. Canadian orders are subject to GST/HST when applicable.
Vacuum Tubes:
Vacuum tubes currently are all shipped from our location in Alberta, Canada to worldwide. Read more details on tube shipping policy on our vacuum tube website.
Shipping Cost:
All our website listed prices, unless otherwise indicated, include international shipping cost already.
International Duty and Tax:
Buyers are responsible for paying their own countries' import duty and sales taxes, if assessed and requested by your country's customs. Unless otherwise indicated on the product listing, duty and tax cannot be rebated.
Factory Direct = No Return nor Refund:
All 'factory-direct-drop-shipping' purchases are final sale with no return nor refund. You are welcome to ask all questions needed before placing orders, but there is no 'change of mind' after purchase. Please consider carefully before making a 'factory direct' order. It cannot be reversed once order is placed with overseas manufacturers.
By placing an order on our website, it is deemed that you have read the above, and fully in consent of our shipping terms. There is no re-negotiation after an order is placed.
Grant Fidelity reserve all rights to change and update the above terms and conditions without notification.
5-year Extended Warranty
‘Extended 5-year Warranty‘ by Grant Fidelity, to provide you a first class ‘peace-of-mind’ purchase and ownership experience. The coverage include the following:
Coverage #1: Western Electric Replica Transformers
The Western Electric Replica transformers are the soul of the product. They enable audiophiles in 2020’s to enjoy the pinnacle of tube sound that people enjoyed back nearly 100 years ago. They are unique and they are irreplaceable by any other transformer design.
Our extended warranty covers parts and labor costs for replacing Western Electric (WE) Replica transformers used in this product, if any transformers are found to be of manufacturer defects, but not including damaged caused by user mishandling.
Coverage #2: Other manufacturer defects other than WE replica transformers
For other manufacturer defects on capacitors or resistors (not including vacuum tubes), buyer has the option to have it serviced locally by their own trusted repair technician who has confirmed reputation and experience with ‘high end high fidelity audio’, rather than shipping the heavy amps to Grant Fidelity’s designated service technician in Canada. Once your own tech has determined which parts need to be replaced, Grant Fidelity will provide the parts from manufacturer directly to your repair tech’s address free of charge. Grant Fidelity will also cover up to 1.5 hrs of labor cost at an hourly rate up to US$75/hr – which will cover this type of repair work as per our years of equipment experience.
Please note that Grant Fidelity reserves our full right to call back equipment to be serviced at our own designated service location in Canada. This option is fully at Grant Fidelity’s discretion.
Applicable to the first and original purchaser:
The above coverage is only applicable to the first, original purchaser with proof of purchase from Grant Fidelity. Please keep your purchase receipt for record either digitally or by print out copy.
Please keep all original factory packaging of the equipment – this is a MUST for safe-handling if the equipment owner ever needs to ship it for service or resale. It also helps to keep the equipment resale value.
Shipping cost related to Extended Warranty Service:
Equipment owner is responsible for one-way shipping cost of sending defective equipment from their own address to Grant Fidelity designated repair service location in Canada.
Grant Fidelity is responsible for return shipping cost from Grant Fidelity designated repair service technician location in Canada back to the equipment owner’s address, after the equipment is repaired.
The above terms and conditions may be subject to changes without notice.
