Phono Preamplifier 2xECC83 Tube Pre Amplifier MM MC Cartridge Compatible 40-63dB Gain Selectable Preamp For Vinyl Record Studio

$3,710.61

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Description

Vacuum Tube Preamp Phono Stage 410g Weight 103mm Width Subsonic Filter FET Input Low Noise Circuit Gold Plated RCA Connectors For Turntable System


Product Specifications:
  • Model: Tube Box S2
  • Type: Vacuum Tube Phono Preamplifier (Equalizer)
  • Tubes: 2 x ECC83 (12AX7A) - Replaceable
  • Cartridge Compatibility: MM (Moving Magnet) and MC (Moving Coil)
  • Input Impedance Settings (Adjustable): 10Ω, 100Ω, 1kΩ, 2.2kΩ, 47kΩ (Fixed for high-output MC)
  • Input Capacitance: 47pF, 147pF, 267pF, 367pF, 487pF, 587pF* (adjustable)
  • Gain Settings: 40dB, 43dB, 50dB, 60dB, 63dB
  • Noise Level:
80dB(A-weighted) at 40dB gain
75dB(A-weighted) at 50dB and 63dB gain
  • Total Harmonic Distortion (THD):
<0.02% at 40dB gain
<0.05% at 50dB and 63dB gain
  • RIAA Equalization Accuracy: ±0.4dB (20Hz - 20kHz)
  • Subsonic Filter: 18dB/octave at 20Hz
  • Inputs/Outputs: 1 x Pair RCA Phono Input / 1 x Pair RCA Output (Gold-plated)
  • Power Supply: External 18V DC / 1000mA adapter 
  • Power Consumption: 470mA DC, <1W in standby
  • Dimensions: 103mm (W) x 131mm (D) x 73mm (H)
  • Weight: 410g (excluding power supply)
  • Circuit Design: Fully discrete, no operational amplifiers (Op-Amps)
  • Key Components: Uses polystyrene capacitors where possible, FET input stage, dual-mono circuitry, layered aluminum/metal chassis for anti-vibration and EMI shielding.
  • Package Included:1 x Phono Preamplifier Unit 

Product Features:
  1. Dual ECC83 Tube Design: Provides the classic warm, detailed, and musical sound signature associated with vacuum tube amplification.
  2. Versatile Cartridge Matching: Offers five adjustable input impedance settings (10Ω to 2.2kΩ) plus a fixed 47kΩ setting to optimally match a wide range of MM and MC phono cartridges.
  3. High-Precision RIAA Equalization: Achieves exceptional accuracy (±0.4dB, 20Hz-20kHz) through a combined passive/active two-part circuit for faithful record playback.
  4. Ultra-Low Noise Performance: Features an FET input stage and a discrete, Op-Amp-free design resulting in a high signal-to-noise ratio (up to 80dB A-weighted).
  5. Dual-Mono Construction: Implements separate circuits for left and right channels to optimize channel separation and soundstage imaging.
  6. Subsonic Filter: Includes a front-panel switchable subsonic filter (18dB/octave at 20Hz) to remove unwanted ultra-low frequency rumble.
  7. Robust Build Quality: Housed in a layered aluminum and metal chassis that effectively dampens vibrations and shields against electromagnetic interference.
Warm Tips:
  • Before connecting, ensure the gain and input impedance settings match the specifications of your phono cartridge for optimal performance and sound quality.
  • Allow the tubes to warm up for at least 5-10 minutes for stable operation and the best sonic character.
  • Use high-quality, shielded RCA cables to connect the phono stage to your turntable and main amplifier to minimize noise pickup.




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Payment Policy – BILLIONS BIRDS

At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.

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Delivery Policy

Delivery Policy – BILLIONS BIRDS

At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.

1. Order Processing

All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.

2. Shipping Times

Estimated delivery times vary depending on your location:

Domestic Shipping: 3–7 business days

International Shipping: 7–15 business days

Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.

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If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.

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Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.


Refund Policy

Refund Policy – BILLIONS BIRDS

At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.

1. Return Eligibility

You may request a return within 14 days of receiving your order. To qualify for a return:

The item must be unused, unworn, and in the same condition as received.

The item must be in its original packaging.

Proof of purchase (order confirmation or receipt) is required.

Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.

2. Non-Refundable Items

The following items are non-refundable:

Final sale or discounted items

Gift cards

Items damaged due to misuse, negligence, or improper care

3. Return Process

To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.

Unless the item is defective or incorrect, customers are responsible for return shipping costs.

4. Refund Processing

Once we receive and inspect your returned item:

We will notify you of the approval or rejection of your refund.

If approved, the refund will be issued to your original payment method within 5–10 business days.

Please note that banks or payment providers may require additional time to process refunds.

5. Damaged or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.

6. Late or Missing Refunds

If you have not received your refund:

Check your bank account again.

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If the issue persists, don't hesitate to contact our support team for assistance.

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