12AU7 / ECC82 Baldwin by TOSHIBA AMPLITREX Tested Long Gray Plates D Getter Made in Japan

12AU7 / ECC82 Baldwin by Toshiba Long Gray Plates D Getter Made in Japan

AMPLITREX Tested – VERY STRONG – Ultra Low Noise – Low Microphonics

Description:

This 12AU7 / ECC82 Baldwin by Toshiba, Made in Japan production, is a vintage tube of great interest for those looking for a quiet, stable, and musically balanced 12AU7.

The Baldwin brand identifies a supply intended for organ and professional applications, where operational continuity, low noise, and reliability were fundamental requirements. Japanese Toshiba construction is known for its precision, internal order, and very consistent electrical behavior over time.

This tube features:

• Long Gray Plates
• D Getter
• production Made in Japan
• same manufacturing lot as the previous Baldwin by Toshiba tubes
• test Amplitrex AT-1000
• internal VTT classification: VERY STRONG
• Ultra Low Noise
• Low Microphonics

The aesthetic conditions are excellent, with very nice and well-preserved lettering, a characteristic that adds further value to a tube already interesting from a technical and sonic point of view.

Sonic Characteristics

This 12AU7 / ECC82 Baldwin by Toshiba offers a clean, controlled, and very musical performance, with a precise but never cold setting. The construction with long gray plates contributes to a wide and well-articulated presentation, while the D Getter adds further construction and collectible interest.

Bass
Controlled, orderly, and well-defined. The low range is solid but not intrusive, with good articulation and sense of rhythm.

Mids
Natural, clear, and well-focused. Vocals and acoustic instruments are legible, with a balanced and pleasant timbre.

Highs
Clean, open, and well-integrated into the musical message. The rendition remains composed and free from harshness, suitable for prolonged listening.

Dynamics
Fluid and stable, with good transient response. The tube maintains consistency even in the most complex passages, without stiffening the reproduction.

Soundstage
Well-organized, with good instrument separation and an orderly soundstage. The presentation is balanced and credible, with a good sense of control.

🎧 Use in Hi-Fi Amplifiers

This tube is particularly suitable for:

• preamplifiers
• line stages
• buffers
• driver stages
• circuits compatible with 12AU7 / ECC82

The Ultra Low Noise and Low Microphonics selection makes it very interesting for sensitive applications where quietness and operational stability are fundamental aspects.

It can also be used in roles such as phase inverter or driver, when the circuit does not require strict symmetry between sections.

🎸 Use in Musical Amplifiers

In the musical field, this Baldwin by Toshiba offers a balanced, stable, and controlled response.

It is suitable for instrument amplifiers and compatible circuits where you want:

• low noise
• contained microphonics
• clear mid-range
• orderly dynamic response
• clean and reliable Japanese vintage character

A concrete choice for those looking for a musical, quiet, and well-built 12AU7.

🎯 Note for Audiophiles and Technicians

This 12AU7 / ECC82 Baldwin by Toshiba combines several valuable elements:

• production Made in Japan
• construction Long Gray Plates
• D Getter
• excellent aesthetic conditions
• very nice and well-preserved lettering
• VTT classification: VERY STRONG
• Ultra Low Noise
• Low Microphonics
• Burning OK

This is not a generic 12AU7, but a selected, tested, and very well-presented tube, ideal for those who want a reliable, quiet, and musically balanced Japanese vintage tube.

Test Results:

Tube tested on AMPLITREX AT-1000 Tube Tester:
Test Conditions: Va = 250V, Vg = -8.5V
Average 100%: Gm = 2200 ; Ia = 10.5 mA
Test Result: VERY STRONG

Tube #3:

Section 1: Gm = 2000 ; Ia = 9.8 mA
Section 2: Gm = 1800 ; Ia = 7.7 mA

Additional Tests Performed:

• Microphonics: Low. Tested and compliant for use in hi-fi, even in phono stages and guitar amplifiers. Also suitable for V1.
• Noise: Very Low and well-controlled. Very quiet operation in hi-fi and musical amplifiers in the intended positions.
• Balance: The sections show consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.
• Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
• Shorts and GAS: Absent.

Conditions:

• Conditions: Vintage - Tested and functional - Supplied in our custom box for optimal protection. 
  
• Functionality: Perfectly operational.
  
• Aesthetic conditions: Excellent – Lettering optimally preserved, minimal signs of time. See photos for details.
• Manufacturing Code: not decipherable, identifiable by construction characteristics. 1960s

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