Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

Buy Box Ad Container Module for Desktop

Custom HTML Module - About Klarna

Custom HTML Module - About SalesFinancing - Second update

You'll choose a plan at checkout.

#515357

I want delivery savings with Delivery Pass

#0071dc

NEW Fulfillment Tue Apr 15 2025 2:17 PM EDT

MTZ Team | Marquee 1 Ad | Item Page

MTZ Team | Marquee 2  Ad | Item Page

MTZ Team | Skyline Ad | Item Page

Other products of interest

MTZ Team | Sponsored Product Carousel - Item Page

More items to explore

MTZ Team | Sponsored Product Carousel - Item Page Broad 

NEW AddonServicesRedesign Fri Jul 18 2025 1:30 PM EDT

NEW AddToCart Mon Jul 14 2025 3:50 PM EDT

NEW AddToCart Tue Apr 15 2025 2:19 PM EDT

NEW BrandBoxDisplayAd Mon Jul 14 2025 9:14 PM EDT

NEW BrandLink Wed Apr 23 2025 12:07 AM EDT

NEW Breadcrumb Mon Apr 07 2025 8:23 PM EDT

Walmart Rewards Mastercard

NEW FinancingOptions Tue Dec 10 2024 3:32 PM EST

I want shipping & delivery savings with

NEW Fulfillment Mon Jul 14 2025 4:00 PM EDT

NEW InternationalShipping Mon May 18 2026 1:02 PM EDT

New Item Page - Nutrition Value Placeholder Module, Wednesday, February 08, 2023, 5:11:53:90 pm

New Item Page - Product Description Placeholder Module, Wednesday, February 08, 2023, 5:14:04:38 pm

New Item Page - Product Ingredients Placeholder Module, Friday, February 10, 2023, 10:34:23:79 am

New Item Page - Product Specifications Placeholder Module, Wednesday, February 08, 2023, 5:15:29:61 pm

New Item Page - Reviews Placeholder Module, Wednesday, March 22, 2023, 10:04:29:34 am

New Item Related Shelves Module, Thursday, June 15, 2023, 6:08:51:10 am

 Price Match Policy

Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

NEW LegalPriceDisclaimer Mon Jul 14 2025 4:11 PM EDT

NEW LegalPriceDisclaimer Wed Apr 30 2025 12:13 AM EDT

NEW ListsAndRegistries Tue Apr 15 2025 4:50 PM EDT

NEW PaymentPlans Mon Jul 14 2025 4:15 PM EDT

NEW PaymentPlans Tue Apr 15 2025 1:31 PM EDT

NEW PriceInformation Tue Apr 15 2025 1:30 PM EDT

NEW ProductDescriptionPlaceholderATF Tue Jul 08 2025 11:41 PM EDT

NEW ProductFlags Thu Apr 10 2025 11:42 PM EDT

NEW ProductHighlightsPlaceholder Wed Jul 02 2025 12:43 AM EDT

NEW ProductImages Tue Apr 15 2025 2:13 PM EDT

NEW ProductName Tue Apr 15 2025 12:53 PM EDT

NEW ProductReturnPolicyDetails Tue Dec 10 2024 3:17 PM EST

NEW ProductReturnPolicy Mon Jul 14 2025 5:04 PM EDT

Return Policy

NEW ProductReturnPolicy Tue Apr 15 2025 2:28 PM EDT

NEW ProductStickyBuyBox Wed Jul 02 2025 12:55 AM EDT

NEW PromoDiscount Tue Apr 15 2025 6:53 PM EDT

New SellersSecondaryBuyBox Module, Tuesday, September 05, 2023, 4:02:21:76 pm

NEW ShopWithConfidence Thu Jan 15 2026 2:20 PM EST

NEW SocialProofMessage Tue Apr 15 2025 7:17 PM EDT

NEW SoldAndShippedBy Mon Jul 14 2025 5:04 PM EDT

NEW SoldAndShippedBy Tue Apr 15 2025 2:23 PM EDT

New!

More savings, less stress.

HSK_Subscribetosave_E_v2

NEW SubscriptionOptionsModule Tue Apr 15 2025 6:44 PM EDT

NEW SubscriptionPriceMessage Wed Apr 23 2025 6:48 PM EDT

NEW Variants Wed Apr 23 2025 11:01 PM EDT

[Sticky] BuyBoxAd Mon Aug 11 2025 3:59 AM EDT

[Sticky] PriceInformation Mon Jul 14 2025 4:03 PM EDT

Syndigo

True

dWeb: L1/L2- Comparison Chart- WK 07, 2026

#000000

Item Carousel - Rich Relevance 1

RR carousel

Item Carousel - Rich Relevance 2

RR carousel 2

Item Carousel - Rich Relevance 3

Upgraded for Pre s HiFi Tube Preamp Amp Speaker Sound Home Theater

<ul><li>DC12-16V Upgraded Preamplifier Amplifiers HiFi Tube Preamp Amp Speaker Sound Home Theater For J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5</li><li>【Various Tube Options】 The preamplifier supports the replacement of multiple tube types, such as 6J1, 6J2, 6J3, 6J4, 6J5, 6A2, 6K4, 6K5, 6AK5, 6AU6, 6BA6, 6BD6, EF93, 6K7 GE5654, and more. This allows users to customize and fine-tune their audio experience based on their preferences.</li><li>【High-Fidelity Sound】 With a preamplification of times and a frequency response range of 5Hz-500kHz, this tube preamp ensures clear and detailed audio reproduction. It is suitable for connecting various low-level audio sources such as mobile phones, CD players, computers, TVs, and MP3 players.</li><li>【Adjustable Lift and Waveform Switch】 The preamp features a high-fidelity lift function with three levels of adjustment. Users can freely customize the sound output according to their preferences. The waveform switch provides additional control and versatility in sound shaping.</li><li>【Compact and Convenient】 Measuring 87 x 75mm in size, this tube preamplifier is compact and to integrate into any theater setup. It comes with a 6A2 tube preamp, offering a reliable and audio amplification solution. (Power supply not included)</li></ul>

Brand

Assembled Product Dimensions (L x W x H)

Assembled Product Weight

Color

Specification:This product is a tube for pre and needs to be connected to an active speaker or power .It cannot be directly connected to car speakers and passive speakers, headphones, and phono s.Product name: Tube for preTube: 6A2 (tube disassembled)Power supply: DC12-16V, current 1A or more (DC12V 1.5A power supply is recommended) (without power supply)Power socket: DC3.5/5.5*2.1The product supports replacement tubes: 6J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5 6AK5 6AU6 6BA6 6BD6 EF93 6K7 GE5654, .Preamplification : voltage amplification timesPreamp frequency response: 5HZ-500KHZ for pre-level sensitivity: 3VAudio input: mobile phone, CD, computer, TV, MP3 and other low-level signal inputs.Audio output: connect to power or active speakersSize: 87*75MMnotes:The tube for pre is in Class A amplification state. It is recommended to use shielded wires for signal lines. Shared wires may cause leakage or noise.The high-fidelity lift can be adjusted freely, and has a waveform switch with three levels of adjustment.The switch on the far left isThe switch is located in the middle and can be raisedThe switch on the far right is elevator number two.notes:1. If the signal line is not shielded or the power supply is not filtered well, noise may be generated. It is recommended to use shielded wire and clean power supply for testing.2. Fill the tube with buffer approximately 5 times. The for pre has an amplification function and is connected between the audio source, for pre and power . The noise from the sound source is amplified, please use a good sound source for testing.Package Included:1 x 6A2 tube preamp (without power supply)Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2.Please allow slight manual measurement deviation for the data.

Manufacturer Part Number

Universal Product Code (UPC check)