Audio Research LS25 Mk II Stereo Tube Preamplifier (15674)
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| Condition | |
| Payment methods |       |
| Ships from | Broomfield , CO, 80020 |
| Ships to | Worldwide |
| Package dimensions | unspecified |
| Shipping carrier | FedEx |
| Shipping cost | $37.00 |
 Average | Research Pricing |
Product: Audio Research LS25 Mk II Stereo Tube Preamplifier
Product SKU: 15674
Serial Number: 92101403
Voltage: 120V
Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including circular marks on the top cover near each corner, a light scuff on the top left edge of the chassis and a small scratch on the top cover right near the front edge. This item shows some wear consistent with its age but is still presentable and sounds wonderful. The unit has an odor of tobacco.
What is Included: Preamplifier, 2 Russian 6H30 tubes, Power cable
Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.
Age: Circa 1999
# of Owners: 1
Tobacco Exposure: Yes
Service History: None
MSRP: $4995
Other Notes: "Because it already has so many useful control functions, the LS25MKII remains almost entirely unchanged in its exterior configuration -- meaning original units can be updated at the factory to the MKII spec. Inside, however, you will find a new motherboard architecture that incorporates a JFET input stage similar to that used in the VTM200, followed by a cathode-follower / output driver stage using two 6H30 twin triodes.
The 6H30 is a new tube for Audio Research ideally suited to its function in the LS25MKII. It is a Russian military tube in current production and use, and is rated by its manufacturer to have an estimated service life of up to 10,000 hours. It has shown highly stable and consistent in its operating characteristics. While its pin configuration is similar to the 6922, it is not a direct replacement. It has higher current requirements for the heater filaments, so it requires a different power transformer than used in the original LS25, as well as power supply adjustments.
Finally, like the VTM200, the LS25MKII also incorporates a rear-panel 12V on/off trigger for even easier incorporation into audio-video installations, or simply for installations where the customer wants more convenient system control. This is the only external modification to the original. You will see this feature appear on future models from Audio Research as well.
In performance, we believe the LS25MKII blows by the original in every respect. It is faster, more dynamic, more open-sounding and presents a more tightly focused soundstage. Bass response is cleaner, quicker, with more apparent impact, while high frequencies are much purer sounding than the original. You will love the coherence of the new MKII -- vividly alive from top to bottom, with an immediacy that is stunning when driving really capable power amplifiers like the VTM200's!" - Audio Research
Reviews: User Reviews
Shipping: Cost to ship this item within the contiguous United States is a flat rate of $37- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $500 will require a signature upon delivery.
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Return Policy
Return Window
Item can be returned within 30 days of receipt.
General Terms
Items must be returned in their original condition, with all included packing materials and no signs of use. Buyer assumes responsibility for all shipping return costs unless the item was not received as described.
Refunds
Buyer will receive a full refund in the original payment method less any shipping charges.
Special Conditions
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Packaging: We offer the best custom packaging in the business - period. When factory boxes are not available, we utilize an industrial Spray-in foam machine to create a custom, foam-injected mold that is form-fitted to each product. This technology ensures that each product we sell arrives safely and our customers have a reusable box for future use. When factory boxes are available, we generally double-box. Large, heavy or high-value items will be designated for freight shipping so that they remain upright and are secured to a pallet for the ultimate in safe transport.
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Returns: Every pre-owned product we offer carries a 30-day, satisfaction-guaranteed return policy unless stated otherwise in the product description.** Additionally, every pre-owned product purchased directly at www.tmraudio.com carries a 90-day warranty. During the 30-day return period, a return or exchange can be requested for any reason. If the product is defective in some way, TMR will cover all related shipping costs. Any returns initiated outside of product defects, the customer is responsible for all Shipping and Handling costs, and there will be a 5% restocking fee taken from the refunded amount. All return requests, with exception of any special orders, must be approved and a return authorization issued before return will be accepted. Special orders are final and will not be available for any return or refund. Basic troubleshooting measures require the cooperation of the customer and are expected to be carried out before a product is deemed “defective." During the 90-day warranty period, we will repair (at our expense) any products that are found to be defective. If we can not repair it, we will replace it with something comparable or issue a full refund. In no case is a customer authorized to send a defective unit to a 3rd party repair center without our consent, and we will not pay for any repairs that we do not perform.
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