Why mine which is brand new stopped working and makes a loud hissing/banging noise?

Charge it. It’s just outta power

Does this B4-X works while charging? without any limiter like "for safety reason"

Hello. Sorry B4-X still has the limitation.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Little Bear B4-X ポータブルデュアルモノバキュームチューブヘッドホンアンプミニバランスオーディオヘッドホンアンプ B4アップグレードバージョン

Product ID: 745269336

Details

スタイル
首回り
ブランド
Little Bear
モデル名
Little Bear
材質
ゴールドメッキ
色
ブラック

⚡450mW high output power

🎧Dual mono balanced output, 300Ω headphone drive

🔋12V 1000mAh battery, 4.5h playtime

3084.28 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

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Description

🎶 Elevate your audio game with Little Bear B4-X — where portability meets audiophile-grade precision!

PREMIUM BUILD QUALITY - Gold-plated sockets, original Nichicon capacitors, and DALE resistors ensure durability and pristine sound.
PORTABLE HI FI POWERHOUSE - Compact design with built-in USA RAYTHEON tubes delivers warm, detailed audio anywhere you go.
LONG LASTING BATTERY LIFE - Rechargeable 12V lithium battery offers up to 4.5 hours of uninterrupted premium listening.
VERSATILE BALANCED OUTPUTS - Supports both 2.5mm and 3.5mm balanced jacks, compatible with most high-end headphones.
PURE DUAL MONO AMPLIFICATION - Independent left/right channels with separate tubes and op-amps for unmatched sound separation.

The Little Bear B4-X is a portable dual mono vacuum tube headphone amplifier featuring independent left/right amplification with USA RAYTHEON tubes and dual NE5532 op-amps. It delivers 450mW output power, supports 16-300Ω headphones via 2.5mm and 3.5mm balanced outputs, and runs on a rechargeable 12V 1000mAh lithium battery for up to 4.5 hours of premium HiFi sound. Crafted with gold-plated connectors and high-end components, it offers warm, detailed audio in a compact, stylish design perfect for on-the-go audiophiles.

Specifications

ASIN	B07KJ18H75
おすすめ度	4.0 5つ星のうち4.0 (182) var
カラー	ブラック
コントロール	ボタンコントロール
ストラップタイプ	クリップ/ストラップ
ノイズ制御	なし
バッテリーセル構成	リチウム
バッテリータイプ	リチウム
フィットタイプ	ボディウェア
ブランド名	Little Bear
ヘッドフォン型式	外部/スタンドアロン
メーカー名	Little Bear
メーカー型番	JMQ413_H
リチウムバッテリーの重量の単位	32.6 グラム
リチウム電池のボルト数	12 ボルト
充電式バッテリーは含まれていますか?	はい
出力ワット数	0.45 ワット
動力源	バッテリー駆動。
品番・型番	7545884688
商品の寸法 L x W	11.4長さ x 6.9幅 cm
商品の推奨用途	パーソナルオーディオ強化
商品の重量	245 グラム
商品スタイル	首回り
型番	Little Bear B4-X
対応アイテム	3.5mmオーディオ出力デバイス
特別な機能	ポータブル。
素材	ゴールドメッキ
表地の素材	ゴールドメッキ

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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3084.28 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Little Bear B4-X ポータブルデュアルモノバキュームチューブヘッドホンアンプ ミニバランスオーディオヘッドホンアンプ B4アップグレードバージョン

Details

Details

Description

Specifications

Common Questions

Little Bear B4-X ポータブルデュアルモノバキュームチューブヘッドホンアンプミニバランスオーディオヘッドホンアンプ B4アップグレードバージョン