Manley LabsNeo-Classic SE / PP 300B Mono Tube Power AmplifierusedManley Labs Neo-Classic SE / PP 300B Mono Tube Power Amplifier; Pair (20080)Product: Manley Labs Neo-Classic SE / PP 300B Mono Tube Power Amplifier; PairProduct SKU: 20080Serial Number: NSEPP421, NSEPP422Voltage: 120VCosmetic Description: 9/10 Excellent condition with no n...3762.00

Manley Labs Neo-Classic SE / PP 300B Mono Tube Power Amplifier; Pair (20080)

Listing ID: lis9gh6g Classified 
 Listed  · 625 Views
Time Left: 10 Days
New Retail Price: $9,700.00


Buy It NowMake Offer
Payment methodsPaypal card
Ships fromErie, CO, 80516
Ships toWorldwide
Package dimensionsunspecified
Shipping carrierFedEx
Shipping cost$179.00
Original accessoriesBox
Agon miniAverage Research Pricing

Product: Manley Labs Neo-Classic SE / PP 300B Mono Tube Power Amplifier; Pair

Product SKU: 20080

Serial Number: NSEPP421, NSEPP422

Voltage: 120V

Cosmetic Description: 9/10 Excellent condition with no notable blemishes. 

What is Included: Pair of amplifiers, 4 Electro-Harmonix 300-B tubes, 2 Sovtek 6SN7GT tubes, 2 Sovtek 6SL7 tubes, 4 Sovtek 5U4G tubes, 2 Power cables, Factory packaging

Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.

Age: 10 years

# of Owners: 2

Tobacco Exposure: No

Service History: None

MSRP: $9700

Other Notes: Decidedly retro, the 300B harkens to a bygone era that focused on the simplicity of design. Expect luscious mid range, delicate detail, and seductive emotion. User control of negative feedback and the ability to switch topology ‘on the fly’ from 12 Watts in parallel SINGLE-ENDED mode to 25 Watts in PUSH-PULL mode is totally unique. This is an amplifier that will always delight and entice you as it adapts to a variety of efficient speakers (and ears!).

"Manley designed the 300B's to be very user-friendly and also to be as versatile as possible. There is a speaker impedance matching toggle switch on the back of the chassis. One setting allows for speakers with impedance ratings of 4 Ohms to 12 Ohms and the other setting is for speakers with impedance ratings of 12 Ohms to 20 Ohms. Manley also allows for selecting Single Ended or Push-Pull settings "on the fly". In Single Ended mode both 300B tubes are used in parallel, resulting in a minimal amount of circuitry in the signal path, but the result is a lower power output. In Push-Pull mode, according to Manley, "each tube works in opposite phase to the other and relies on the output transformer to make the polarities work together. This has advantages in efficiency and in the distortion and noise cancellation properties of a balanced circuit." - AVRev

Product Specifications


Reviews:  Stereophile

Shipping: Cost to ship this item within the contiguous United States is a flat rate of $179- 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.

No questions have been asked about this item.

Ask the seller a public question

You must log in to ask a question.

Return Policy
Return Window

Item can be returned within 14 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.


Buyer will receive a full refund in the original payment method less any shipping charges.

Special Conditions

Packaging: We offer the best custom packaging in the business - period. When factory boxes are not available, we utilize a Spray-in foam machine to create a custom, foam-injected mold that is form-fitted to each product. We invested over $5000 in this equipment to ensure that each product we sell arrives safely and our customers have a reusable box for future use. When factory boxes are available, we always double box.

Payment: We accept all forms of payment including credit cards. We never charge our customers for Paypal or other processing fees.

International Customers: We welcome business from around the globe. Please contact us in advance of purchase for a shipping quote. You are responsible for voltage conversion. You are responsible for all customs duties / taxes as required by your country. Only Paypal with verified address or bank transfer accepted for International orders. It is your responsibility to determine the compatibility of the specified product for your country. No returns accepted for voltage or other forms of incompatibility.

Returns: Every product we offer carries a 14-day, satisfaction-guaranteed return policy unless stated otherwise in the product description.** Additionally, every pre-owned product purchased directly at carries a 45-day warranty. During the 14-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. Refunds for other reasons will not include S&H costs. All return requests must be approved and a return authorization issued before return will be accepted. Basic troubleshooting measures require the cooperation of the customer and are expected to be carried out before a product is deemed “defective”. During the 45-day warranty period, we will repair (at our expense) any products that are found to be defective. If we can not repair, we will replace with something comparable or issue a full refund. New product lines for which TMR is an authorized dealer carry additional manufacture warranties.

** Any use of freight forwarders or additional shipping services beyond the original shipping address will void all return privileges and warranties.


member since August 2013

TMR Audio  Verified Dealer

Last 12 months

9 Watchers