GRANITE AUDIO 864SR Tube Amplifiers Mono Cary Mcintosh

( Brand: Granite Audio ), ( Model: 864SR ), ( Country/region Of Manufacture: United States ), ( Type: Power Amplifier )

Review GRANITE AUDIO Tube Amplifiers Silver Reference Mono Pair Cary Mcintosh

The 864SR Granite Audio Tube Amplifiers, a mono pair from Cary Audio and McIntosh, are a testament to the enduring charm of vintage audio technology fused with modern refinements. These amplifiers encapsulate the essence of audiophile elegance, boasting an exquisite Granite finish that lends them a timeless and luxurious appearance.

Inside the 864SR's stately exterior, high-quality KT88 and 6SL7 tubes power the amplifiers, providing a warm and dynamic soundstage that is both emotive and detailed. The mono design ensures each channel receives undivided attention, allowing for a precise and well-balanced stereo image.

The 864SR is equipped with a McIntosh-designed output transformer and Cary Audio's proprietary AutoBias circuit, ensuring consistent performance and long-term tube life. This AutoBias system dynamically adjusts the operating point of the KT88 tubes, maintaining the perfect balance between current flow and voltage, thereby eliminating the need for bias adjustments.

The 864SR offers a range of connectivity options, including balanced XLR and single-ended RCA inputs, as well as a premium gold-plated speaker binding post. Moreover, a dedicated power supply and separate power transformers for each channel provide ample power and exceptional isolation, ensuring optimal performance and minimal interference.

In summary, the 864SR Granite Audio Tube Amplifiers are a captivating combination of vintage charm and modern technology. Their elegant design, warm and dynamic sound, and AutoBias circuitry make these amplifiers an ideal choice for the discerning audiophile seeking a truly immersive listening experience.

1. Superior Sound Quality: Cary McIntosh is renowned for its high-quality audio equipment, and the 864SR Granite Amplifiers are no exception. They provide a rich, detailed, and natural sound with excellent dynamic range.

2. Tube Technology: Tube amplifiers, like the 864SR, offer a warm and musical sound that some find more enjoyable than solid-state amplifiers. The tubes also tend to age gracefully, improving the sound over time.

3. Customizable Sound: Tube amplifiers allow for customization of the sound by swapping out tubes with different specifications. This can help tailor the sound to your personal preferences.

4. Handcrafted and Durable: Cary McIntosh products are handcrafted in the USA, ensuring high-quality craftsmanship and longevity. The 864SR Granite Amplifiers are built to last and are backed by a comprehensive warranty.

1. Higher Cost: Tube amplifiers, especially high-end models like the 864SR, can be significantly more expensive than solid-state amplifiers. This may put them out of reach for some budgets.

2. Maintenance and Replacement Costs: Tube amplifiers require regular maintenance, including tube replacement. While the initial cost of a tube amplifier may be higher, the cost of maintaining and replacing tubes can add up over time.

3. Less Efficient: Tube amplifiers are generally less efficient than solid-state amplifiers, meaning they consume more power and produce more heat. This can result in higher energy bills and potentially overheating if not properly ventilated.

The 864SR Granite Audio Tube Amplifiers (Monoblock Cary McIntosh) offer superior sound quality, customizable sound, and are built to last. However, they come at a higher cost, require regular maintenance, and are less efficient than solid-state amplifiers. If you value the unique sound and customization options offered by tube amplifiers and have the budget to cover the initial cost and ongoing maintenance, then the 864SR Granite Amplifiers could be a great addition to your audio system. If these factors are not a priority for you, you may want to consider a more cost-effective and low-maintenance solid-state amplifier.

Details:

When the contour switch is in off position there no circuit and even out of they are perfect working condition I have original boxes. The tube filaments are run on ac voltage which is lifted from ground by 40 volts dc, and wired with shielded twisted pair wires for maximum current handling, minimum noise, a smooth rail 864 has dramatically improved signal-to-noise ratio of 102db at rated output rca inputs speaker outputs hard gold plate over silver copper best in long-life wear transfer clean unaltered signal. The bias procedure for 864 is even easier than earlier model develops a minimum of 60 watts in pent ode and 30 tried. The silver reference series usually sell for more than 5k if you can ever find them.

This wire is 99. The 864SR silver reference has its internal signal path wired with our world renowned 470 interconnect wire.

Switches and contacts are either gold or silver. The is easily switchable from pent ode to tried with an 18 solid silver contact toggle switch located between kt88's.

They are built like tanks and taken care of should give you many, many years service. This is due to the all new filament, plate, and volume control circuits. The 864 has a 100k ohm constant impedance alps input volume control, that is improved quality over also built-in user adjustable contour circuit with three settings for use other brands of speakers or listener preferences damping. These are priced to sell.

This can run without a preamps. If the user has efficient speakers, tried mode offers some excellent dynamic sound. Granite Audio 864SR power amps silver reference series i'm selling my mono pair.

All handmade in the us. They've come to appreciate the great sonic benefits of 470 silver interconnect between their top quality components and it only made sense that we finally carry same super wire interior circuits precious music signal. Simply plug your CD player directly into it.

Biasing is extremely easy with these amps you want to tube roll which something I like doing. Since they are my own personal amps, I will guarantee them to be in excellent working and physical condition aside from the tiny nick put one of amps - see picture.

It has the same live, dynamic circuit with a few improvements that give an extended bass response is fuller and richer. 1, for just such a simple system.

Tube biasing is user adjustable with factory supplied tool and Vichy trimmers, all easily accessed from the rear of chassis. These are incredible sounding amps that cost 7,500 when new. Good luck and happy buying.

specifications cassettevintagee:

• brand: Granite Audio
• model: 864sr
• country/region of manufacture: United States
• type: Power Amplifier

Returns cassettevintagee:

• policy: returns accepted
• paid by: Buyer
• time: 30 Days
• type: Money Back

Seller cassettevintagee:

• zipcode: 21716
• city: Brunswick, Maryland

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• PayPal

General cassettevintagee:

• in stock: Yes
• consumer electronics > vintage electronics Audio video consumer electronics > vintage cassette decks

Offer cassettevintagee:

• Started: July 25, 2018, 7:27 am
• bids: 0
• best offer: false
• Sold: 0
• quantity: 1
• min. bid: $2,395.00

Ratings:

1. Thank you for an easy, pleasant transaction. Excellent buyer.. 07-20-18
2. Thank You 07-24-18
3. Item as described. Fast shipping and excellent packing. Great ! A 07-19-18
4. All good.: - 07-22-18

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• handling: 3 days
• cost: $4.0