Traverse Analogue

TA-652 Dual Vacuum Tube Preamplifier

SKU: # 697485   |   Model: # TA-652   |    Product Reviews1 Reviews  Write a Review

TA-652 Dual Vacuum Tube Preamplifier

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TA-652 Dual Vacuum Tube Preamplifier
 This product is no longer available.
Introducing the stereo vacuum tube preamplifier with mic/line-level inputs; the 652! Using the GAIN control, the engineer can achieve 5 - 60 dB of gain from the uniquely-biased tube input stage, followed by a master attenuation control in the output buffer stage. Want a clean yet musical replication of the source? How about the creamy saturation of an esoteric vintage preamplifier? The 652's gentle drive characteristics allow for a broad tonal palette depending on how hard it is hit with signal. It is designed to interface with all types of microphones (including ribbons), and the line-level input pad allows users to add analogue warmth to any track from a digital audio workstation; making it an indispensable tool for adding colouration and harmonic distortion! Two flavours, one box, all discrete, and proudly hand-crafted in Canada.

Features
• 12AX7 input stage with 12-position gain switch, 5 60 dB (5 dB steps)
• High-voltage transistor buffer output stage (4x FJP5200)
• Discrete Class-A operation, low-noise topology
• Hermetically-sealed relay switching, with gold-plated contacts
• Variable input impedance for mic: 300 ohms, 1200 ohms
• Source selection switch: Mic and Line-Level
• Phase inversion switch
• Selectable high-pass filter of 10Hz, 80Hz, and 200Hz (first order)
• Regulated low-noise power supply, with +48V DC phantom power
• High-quality Beldfoil shielded cabling throughout
• Custom Lundahl input and output transformers

Specifications
Typical Test Parameters: 2mV RMS sine, 1 kHZ, 1200R input impedance, 100K output load impedance
Input Impedance: 300Ω, 1200Ω (Mic), 15KΩ (Line)
Maximum Input Level: +4dBV (XLR, 1200R setting), -2dBV (XLR, 300R setting)
Maximum Output Level: +15 dBV
XLR Output Impedance: < 65 Ω
Recommended Minimum Load: 300 Ω
Frequency Response: 18Hz to > 50kHz (-3 dB)
High Pass Filter Characteristics: -3dB @ 80Hz or 200Hz, 20 dB/decade (first-order)
Maximum Gain: 60dB (1200R XLR input - XLR output, unweighted)
EIN Noise: -128dBV (20Hz ~ 20kHz); -130dBV (A-wtg)
Residual Output Noise (Master at Zero): -121dBV (1uV) 20Hz ~ 20kHz
Noise Factor: 5dB re 150R source impedance (20Hz ~ 20kHz)
THD+N: 0dBV to 15dBV, 0.03% to 2%
Tube Per Channel: 1x 12AX7
Phantom Power: +48V DC
Power Sequencing: Soft-start for tube filament supply; soft-start for tube high voltage supply; 30s turn-on delay for output relays; output relays mute immediately at power-down
Power Requirements: 110-120V / 220-240V, 50/60Hz, 30VA max
Power Consumption: 24 Watts
Dimensions: 19" W x 3.5" H x 12.25" D
Weight: 6kg

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Reviews


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Amazing piece of hardware 0 of 0 customers found this review helpful
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Closest Store   Charlottetown, Prince Edward Island
This preamp goes from clean to a very pleasing tube saturation. Perfect for any mic, including ribbon microphones.
Posted by Adam on Nov 10, 2020
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A warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.

Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.

How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?
  • Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
  • Product Replacement: If your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.
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Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty. Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Cosmetic Damage, Accidental Damage, or problems caused by Humidity or Temperature Issues are not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.

Purchasing additional years of coverage

Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.

If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:

  • NEW products: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
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