SKU: 67804942007

Pro-Ject Tube Box DS3 B True Balanced Phono Preamplifier

Sale price$697.05 Regular price$774.50
Save 10%

Pay in installments of $193.62 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 1 - Sep 6

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Pro-Ject Tube Box DS3 B True Balanced Phono PreamplifierHigh End Tube Sound The Tube Boxes have been an integral part of our product portfolio for many years. Now, the new Tube Box DS3 B adds balanced in and outputs to the beloved tube amplification. This precision tube phono preamplifier benefits from outstanding circuit technology from Dr. Sykora and uses ultimate components. Cartridge loading options You can connect two turntables at the same time & easily set everything on the front plate. Input

High-End Tube Sound

The Tube Boxes have been an integral part of our product portfolio for many years. Now, the new Tube Box DS3 B adds balanced in- and outputs to the beloved tube amplification. This precision tube phono preamplifier benefits from outstanding circuit technology from Dr. Sykora and uses ultimate components.

Cartridge loading options

You can connect two turntables at the same time & easily set everything on the front plate. Input settings are stored in the memory, and ranges from 40dB up to 65dB are possible. You can perfectly match it with a wide variety of cartridges and integrate it into the rest of your hi-fi system, matching the volume levels accurately to other sources like CD players or streaming devices. Load impedance can be set continuously via potentiometer, a system invented by Pro-Ject Audio Systems.

It allows you to seamlessly adjust the impedance during playback and immediately assess the impact of different loading options. This is necessary to find just the right load impedance for your cartridge. No other manufacturers implement this feature in this way.

Balanced Signal Transmission

Connect your turntable either with the 5-pin mini XLR cable or standard XLR cables & profit from the balanced signal transmission. Symmetrical, also called balanced, transmissions consist of a hot and a cold (also called + and -) signal. Both signal chains effectively carry the same musical information. The Tube Box DS3 B can extract the final musical information out of the +/- signals and remove all noise that was potentially added along the transmission. All components including tube output and polypropylene capacitors are audiophile grade and guarantee a breathtaking sound experience.

Technical Specifications

  • Tube assembly: 2x E88CC / 6922
  • Input impedance: Stepless 10-1000 Ohms, fix 47 kOhms
  • Capacitance: 50 / 150 / 300 / 400 pF
  • Gain (+6dB using XLR Out): 40 / 45 / 50 / 55 / 60 / 65 dB
  • Output voltage typically: 500 mV/1kHz at 5mV/1kHz (at 40dB)
  • Signal-to-noise ratio: >87dBV -, A weighted
  • THD: < 0,03%
  • RIAA curve accuracy: +/- 0,5dB/20Hz - 20kHz
  • Subsonic filter: at 20Hz with 18dB/octave
  • Input: 1x 5-pin mini XLR / 1x pair XLR / 1x pair RCA phono
  • Output: 1x pair RCA, 1x pair XLR
  • Power supply: 18V/1000mA DC
  • Power consumption: max 750 mA DC / < 0,5 watt standby
  • Dimensions W x H x D: 206 x 70 x 194 mm
  • Weight: 1560g (without power supply)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67804942007

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 17 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Cameron Whitworth
Belleville, US
★★★★★ 5
Good for kids
Color: Purple Pink
Perfect for my daughter’s new iPad. Very durable. Love the pink and purple color. Easy to put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
M
Verified Purchase
Meranii
Fort Morgan, US
★★★★★ 5
Perfect case for my daughter’s iPad
Color: Purple Pink
bought this case for my daughter. The fit is perfect — all the buttons and camera line up exactly and it snaps on securely. The case feels sturdy, protective, and durable but not too heavy, so she can still carry it comfortably. The stand feature is convenient. The design is also super cute — Luna loves it Overall, great quality for the price. I would definitely buy it again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
G
Verified Purchase
G D
Boise, US
★★★★★ 5
Perfect case
Color: Purple Pink
Great protection for my IPad. I’m always dropping something. This case was pretty easy to install and has the protection over the glass front. No problem using the iPad with the cover. Cute colors and has a loop to store the pen
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
A
Verified Purchase
Amazon Customer
New York, US
★★★★★ 5
Very versatile!
Color: Colorful Pink
I got this iPad case for myself and my two year-old daughter as we both use this iPad. This case has definitely held up very well. I love the material because it’s nonslip so it’s easy for my two-year-old to hold I also love the movable and adjustable prop on the back that also doubles as a handle. There is two spots to put your Apple Pencil, so that’s very neat. It is a little bit bulky, but it is very protective and I think that is a good trade-off. There is also a cover for the charging port to prevent dust from getting in there or any spills. At first I was a little bit weary about it having a built-in screen protector, but it’s very clear and does not interfere with using the screen at all, so it’s actually a nice touch. I really love this thing and think it is worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
P
Verified Purchase
patrina green
Lake Worth, US
★★★★★ 5
Great case
Color: Purple Pink
My daughter loves it and the color is marvelous. It was easy to put on, I would buy again worth my money. Very sterdy as good for kids that love to drop their tablet. I like how its has a strap so your kid can carry it on their over there shoulders.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026

recommand products