All
 
  • Login
  • 866-498-7882
  • My Account
  • Wish List
  • Financing
  • Help
  • Feedback
  • Change
  • Products
    • Guitars
      Top Categories
      1. All Guitars
      2. Electric Guitars
      3. Acoustic Guitars
      4. Acoustic-Electric Guitars
      5. Classical Guitars
      6. Left-Handed Guitars
      7. Guitar Value Packs
      8. Guitar Accessories
      Related Products
      1. Guitar Amps
      2. Pedals & Effects
      3. Strings
      4. Cases & Gig Bags
      5. Stands & Hangers
      6. Straps
      7. Picks
      8. Cables
      9. Folk Instruments
      Top Brands
      1. Fender
      2. Gibson
      3. Epiphone
      4. Ibanez
      5. Martin
      6. Music Man
      7. Taylor
      8. ESP
      9. PRS
    • Platinum Guitars
      Buy Platinum Inventory
      1. Platinum Guitars
      2. Platinum Bass
      3. Platinum Amps
      4. Boutique Pedals
    • Bass
      Top Categories
      1. All Bass
      2. Electric Bass
      3. Acoustic Bass
      4. Electric Upright Bass
      5. Left-Handed Bass
      6. Electric Bass Value Packs
      7. Bass Accessories
      Related Products
      1. Bass Amps
      2. Pedals & Effects
      3. Strings
      4. Cases & Gig Bags
      5. Stands & Hangers
      6. Cables
      Top Brands
      1. Ibanez
      2. Schecter
      3. Fender
      4. Music Man
      5. ESP
      6. Dean
      7. Squier
    • Drums & Percussion
      Top Categories
      1. All Drums & Percussion
      2. Acoustic Drums & Sets
      3. Electronic Drums & Sets
      4. Cymbals
      5. Hand Drums & World Percussion
      6. Drum Hardware
      7. Marching Percussion
      8. Concert Percussion
      9. Classroom & Kids
      10. Accessories & Parts
      Related Products
      1. Sticks & Accessories
      2. Heads
      3. Stands & Racks
      4. Cases, Bags & Covers
      5. Drum Mics
      6. Thrones
      7. Drum Amps & Monitors
      8. Software & Virtual Instruments
      Top Brands
      1. DW
      2. Pearl
      3. Zildjian
      4. Sabian
      5. Tama
      6. Vic Firth
      7. Remo
      8. PDP
      9. Gretsch
    • Live Sound Equipment
      Top categories
      1. All Live Sound
      2. PA Systems
      3. PA Speakers
      4. Live Power Amps
      5. Stage Monitors
      6. Stage Subwoofers
      7. Signal Processors
      8. Mixers
      9. Dynamic (Live) Microphones
      10. Wireless Systems
      11. Headphones
      12. Power Conditioners
      13. DJ Equipment
      14. Stage Lighting & Effects
      Related Products
      1. Stands & Racks
      2. Cases & Gig Bags
      3. Cables & Snakes
      4. PA Replacement Speakers & Parts
      5. Stage Accessories
      6. Software & Virtual Instruments
      7. iOS Devices
      Top Brands
      1. JBL
      2. QSC
      3. Mackie
      4. Electro-Voice
      5. Bose
      6. Behringer
      7. Shure
    • Microphones & Wireless
      Top Categories
      1. All Microphones
      2. All Wireless Systems
      3. Condenser (Recording) Microphones
      4. Dynamic (Live) Microphones
      5. USB Microphones
      6. iOS Microphones
      7. Drum Microphones
      8. Microphone Packs & Kits
      9. Microphone Accessories
      Related Products
      1. Stands & Booms
      2. Cases & Gig Bags
      3. Cables
      4. Microphone Preamps
      5. Vocal Processors
      6. Vocal Software
      Top Brands
      1. Shure
      2. MXL
      3. Audio-Technica
      4. AKG
      5. Sennheiser
      6. Blue
      7. Electro-Voice
    • Amplifiers & Effects
      Top Categories
      1. All Amps & Effects
      2. Guitar Amps
      3. Bass Amps
      4. Amp Stacks
      5. Mini Amps
      6. Headphone Amps
      7. Keyboard Amps & Monitors
      8. Drum Amps & Monitors
      9. Harmonica Amps
      10. Guitar Effects
      11. Bass Effects
      Related Products
      1. Covers & Cases
      2. Stands
      3. Tubes & Parts
      4. Cables & Snakes
      5. Stage Lighting & Effects
      6. Preamps
      Top Brands
      1. Fender
      2. Marshall
      3. Line 6
      4. Boss
      5. Dunlop
      6. Vox
      7. Peavey
    • Keyboards & MIDI
      Top Categories
      1. All Keyboards & MIDI
      2. Production & Groove
      3. Digital Pianos
      4. Synthesizers
      5. Workstations
      6. Portable & Arranger Keyboards
      7. MIDI Controllers
      8. MIDI Interfaces
      9. iOS Keyboards
      10. Keyboard Accessories & Parts
      Related Products
      1. Keyboard Amps & Monitors
      2. Benches & Stools
      3. Stands & Racks
      4. Keyboard Pedals
      5. Cases & Gig Bags
      6. Cables
      7. Power Supplies
      8. Software & Virtual Instruments
      9. Accordions
      Top Brands
      1. Korg
      2. Casio
      3. Yamaha
      4. Roland
      5. Akai
      6. M-Audio
      7. Moog
      8. Nord
      9. Native Instruments
    • Accessories
      Top Categories
      1. All Accessories
      2. Strings
      3. Cables & Snakes
      4. Cases & Gig Bags
      5. Stands & Racks
      6. Tuners & Metronomes
      7. Guitar & Bass Parts
      8. Power & Batteries
      9. Furniture & Studio Foam
      10. Care & Cleaning
      11. Practice & Performance Aids
      12. Tools
      Related Products
      1. Pedals & Effects
      2. Pickups
      3. Software & Virtual Instruments
      4. Books, Sheet Music & Media
      5. Gifts, Collectibles, & Clothing
      6. Personal & Home Entertainment
      7. iPad
      8. iPad Apps
      Top Brands
      1. D'Addario
      2. Ernie Ball
      3. Dunlop
      4. ProLine
      5. Live Wire
      6. Hercules
      7. Levy's
      8. EMG
    • Recording & Software
      Top Categories
      1. All Recording
      2. All Software
      3. Audio Interfaces
      4. Studio Monitors
      5. Studio Subwoofers
      6. Recording Packages
      7. Recorders
      8. Audio Playback
      9. Microphones
      10. Headphones
      11. Signal Processors
      12. Mixers
      13. Computers & Peripherals
      Related Products
      1. Furniture & Studio Foam
      2. MIDI
      3. Books, Sheet Music & Media
      4. Benches & Stools
      5. Stands & Racks
      6. Cables & Snakes
      7. Power & Batteries
      8. Disc Duplication
      9. Recordable Media & Memory
      10. iOS Devices
      11. iPad
      12. iPad Apps
      Top Brands
      1. TASCAM
      2. M-Audio
      3. Apple
      4. Avid
      5. Ableton
      6. KRK
      7. PreSonus
      8. Focusrite
      9. Native Instruments
    • iPad, iPod & iOS Devices
      Top Categories
      1. All iOS
      2. iOS Audio/MIDI Interfaces
      3. iOS DJ Gear
      4. iOS Mixers
      5. iOS Keyboards
      6. iOS Microphones
      7. iOS Live Sound
      8. iOS Docks & Speaker Systems
      9. iOS Accessories
      10. iPad
      11. Apps
      12. iPods & MP3 Players
      Related Products
      1. Headphones
      2. Software
      3. Cables & Snakes
      4. Computers & Peripherals
      Top Brands
      1. AirTurn
      2. Apogee
      3. Apple
      4. Blue
      5. IK Multimedia
      6. Mackie
    • DJ & Lighting
      Top Categories
      1. All DJ
      2. Lighting & Effects
      3. Controllers & Interfaces
      4. DJ CD, MP3 & Media Players
      5. Mixers & Parts
      6. Packages/Systems
      7. Turntables
      8. iOS DJ Gear
      9. DJ Accessories
      10. Headphones
      11. DJ & Remix Software
      Related Products
      1. Karaoke
      2. PA Systems
      3. Microphones & Wireless
      4. Production & Groove
      5. Cables & Snakes
      6. Stands & Racks
      7. Cases & Bags
      8. Lighting Stands & Truss
      Top Brands
      1. Chauvet
      2. Native Instruments
      3. Pioneer
      4. Numark
      5. JBL
      6. eMedia
      7. MJS
    • Books & Videos
      Top Categories
      1. All Books & Videos
      2. Instruction Materials
      3. Tablature
      4. Sheet Music
      5. Music Education for Children
      6. Music Theory & History
      7. Music Industry & Special Interest
      8. Pro Audio Instruction
      Related Products
      1. Sheet Music & Scores
      2. Performance Instruction
      3. Tablature
      4. Music Education for Children
      5. Music Theory & History
      6. Music Industry & Special Interest
      7. Pro Audio Instruction
      8. En Espanol
      Top Brands
      1. Hal Leonard
      2. Alfred
      3. eMedia
      4. MJS
      5. Cengage
      6. Carl Fischer
      7. Mel Bay
      8. Cherry Lane
    • Folk & Wind Instruments
      Top Categories
      1. All Folk & Wind Instruments
      2. Ukuleles
      3. Banjos
      4. Mandolins
      5. Resonators
      6. Pedal & Lap Steels
      7. Latin Guitars
      8. Harmonicas
      9. Accordions
      Related Products
      1. Strings
      2. Cases & Gig Bags
      3. Cables
      4. Stands & Hangers
      5. Guitar Accessories
      6. Books, Sheet Music & Media
      7. Tuners & Metronomes
      Top Brands
      1. Fender
      2. Hohner
      3. Lanikai
      4. Rogue
      5. Suzuki
      6. Gretsch
      7. Deering
    • Band & Orchestra
      Top Categories
      1. All Band & Orchestra
      2. Woodwind Instruments
      3. Brass Instruments
      4. Orchestral Strings
      5. Marching Band
      6. Concert Percussion
      7. Classroom & Kids
      Related Products
      1. Woodwind Accessories
      2. Brass Accessories
      3. Orchestral Strings Accessories
      4. Marching Accessories
      5. Concert Percussion Accessories
      6. Books, Sheet Music & Media
      7. Tuners & Metronomes
      Top Brands
      1. Vandoren
      2. Yamaha
      3. Rico Reeds
      4. Buffet Crampon
      5. Bach
      6. Selmer Paris
    • Vintage
      Vintage Gear
      1. Vintage Guitars
      2. Vintage Bass
      3. Vintage Drums
      4. Vintage Amps & Effects
      5. Vintage Keyboards
      6. Vintage Microphones
    • Guitar Center Gift Card
  • Brands
    • Fender
    • Gibson
    • Epiphone
    • Martin
    • Taylor
    • Yamaha
    • Ibanez
    • Roland
    • Line 6
    • Shure
    • Dunlop
    • Ernie Ball
    • D'Addario
    • Remo
    • Apple
    • All Brands
  • Used Gear
    • All Used Gear
    • Vintage Gear
    • Used Guitars
    • Used Amps
    • Used Bass
    • Used Drums
    • Used Live Sound
    • Used Recording
    • Used Accessories
    • Used Keyboards
    • Sell Your Gear
  • Clearance
    • Clearance
  • GC Pro
    • Featured Products
    • Installation Services
    • Technical Support
    • Education Affiliates
  • Our Stores
    • Store Locator
    • GC Garage
    • GC Studios
  • Learn
    • Music Mentor
  • GC Music
    • GC on Tumblr
    • Sessions TV
    • Artist Interviews
    • Podcasts
    • Connections
    • YouTube
    • Facebook
    • Twitter

Item # 105653422

Print this page

  1. Select the information you'd like to print out.
  2. Cancel
Tube-Tech SSA-2B Stereo Summing Amplifier
Use Add to Cart below to have it shipped to you, or to a store near you.
Close
  • Store
  • Availability
Guaranteed Lowest Price
Pickup In Store
GC Shopping Cart
 Cart Contents
Qty Description Price Shipping Subtotal 
      Tube-Tech SSA-2B Stereo Summing Amplifier (105653422)
Availability:  


Ultra high-quality 8 stereo/4 mono x 2 output summing amplifier for "mixing outside the box."

Yes, you can mix inside the box and get good results, but with the Tube-Tech SSA 2B Stereo Summing Amplifier, you can mix inside a much better box and get stunning results. Where extremely high-quality summing of several signals into two channels is desired (and where isn't it?), the SSA 2B is a top choice.


Tube-Tech SSA 2B Stereo Summing Amplifier, First Take:
Ultra high-quality summing amplifier with very wide frequency response
8 stereo/4mono inputs summed to 2 channels out
Inputs balanced by zero field transformer
Balanced and fully floating outputs

Ultra High-Quality Summing Amplifier

The rackmountable Tube-Tech SSA 2B Stereo summing amplifier features two very low-noise, low-distortion summing amplifiers with a very wide frequency response of 5Hz — 100 kHz. The inputs are transformer balanced and the circuits are symmetrical from input to output. The inputs are also capable of handling extremely high input levels.

8 Stereo/4 Mono Inputs Summed to 2 Outputs

The Tube-Tech SSA 2B summing amplifier has 4 mono input (hard wired to CH1 and CH2) and 8 stereo inputs, which are summed to two outputs. The SSA 2A consists of a summing amplifier at the input, a 23 stepped attenuator with a range of +/- 10 dB and an output stage. Two large VU-meters show the levels on the XLR output sockets. To avoid the distortion introduced by the VU-meters when connected directly to the output XLR sockets, symmetrical configured OP- amps buffer the VU-meters. The summing amplifier is a symmetrical two-stage amplifier, designed around two dual, low impedance, and high transconductance triodes. The input transformer is part of the dual feedback configured as a so-called zero field transformer. The attenuator is a heavy gilded 2 x 23-position switch with steps of +/- 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10dB. The output stage is designed around two dual triodes in push-pull and an output transformer (with a static screen). Both the summing amplifiers and the output amplifiers are symmetrical.

Zero Field Transformer-Balanced Inputs

All inputs on the Tube-Tech summing amplifier are balanced by two zero field transformers (one for each channel). In zero field transformer configurations, the transformer is part of the feedback circuit. There are several benefits to be derived from this: 1. The voltage across the transformer is reduced substantially, whereby a much smaller transformer is needed for the same specification. The reduction is of the same magnitude as the feedback applied. 2. The distortion at low frequencies is reduced substantially. 3. Frequency response in both the low and high range is extended. 4. Phase response in both the low and high range is more linear. The results are better harmonic balance of the instruments and more realistic sound.

Balanced and Fully Floating Outputs

The outputs are balanced and have fully floating transformers with a static screen. Floating a transformer (not referenced to ground) provides maximum electronic isolation for superior noise rejection. The static screens shield the transformer's secondary windings from the primary and prevent RF (radio frequency) electromagnetic noise from getting across. The Tube-Tech amp's Line Input is unbalanced, but an optional transformer is available, which will allow the line in to act as though it's balanced. The power supply and the sidechain circuits of the Tube-Tech SSA-2B summing amplifier are based on a solid-state circuit. With the exception of the output stage all DC voltages are stabilized. This prevents any variation in the DC energy when combined with the musical signal, which would otherwise cause certain types of distortion or hum.


About Tube-Tech

For over twenty years, Tube Tech has been one of the most prominent names in all-tube signal processing equipment. You'll find their gear in the best recording and mastering studios around the world. The company's founder, John Petersen is an electrical engineer who was factory trained at Solid State Logic, EMT, Studer, Sony, Neumann, and NTP Electonik (digital audio routers). He also designed tape recorder playback/recording amps for Lyrec tape recorders (found in the studios of the legendary Joe Meek and Vangelis). His first design under the name of Tube-Tech was an all-tube equalizer based on the legendary Pultec EQP 1A. Petersen continued to design and manufacture a number of innovative all-tube outboard processors including preamps, multiband compressors and summing amps. Thanks to John's dedication to high-quality analog sound you'll see Tube-Tech amplifiers and gear in the audio racks of pro audio legends such as multi Grammy Award winner Al Schmitt, (Frank Sinatra, Steely Dan, Toto, Quincy Jones, Natalie Cole, Diana Krall), Grammy winner Joe Chiccarelli, (Elton John, Beck, U2, Tori Amos, Counting Crows, Offspring), engineer Russ Long (Sixpence None The Richer, Wilco, Dolly Parton, Allison Moorer), producer-engineer Tony Shepperd (Elton John, Madonna, Kenny Loggins, Barbra Streisand, Lionel Richie, and Whitney Houston), and many more.

Tube-Tech SSA-2B Stereo Summing Amplifier Features:

  • 8 stereo+4 mono inputs - 1 stereo output
    23-step gold plated output gain control
    Master Output Gain: -10 dB to +10 dB
    Fully symmetrical circuitry from input to output
    Zero field transformer balanced inputs.
    Maximum input > +30 dBu
    Low noise: < -90 dBu @ 8 inputs terminated
    Two large VU meters showing output level
    Frequency response 5Hz — 100kHz
    Distortion < 0.05 %


Tube-Tech SSA-2B Stereo Summing Amplifier Specifications:

  • Impedance Input DI: 50 kohm
    Impedance Output: < 60 ohm
    Frequency response @ -3 dB: 5 Hz to 100 kHz
    Distortion THD+N @ 40 Hz: 0.05 % (0 dBu); 0.05% (+10 dBu)
    Max. Output: +26 (0 dBu); 1% (0.05%)
    Max. Input: +21 (0 dBu); 1% (0.05%)
    Noise Rg=200 ohm: 22 Hz-22 kHz; input 1 = —90 dBu, inputs 4+8 = -85 dBu (0dB output gain); input 1 = —80 dBu, inputs 4+8 = -75 dBu (+10dB output gain)
    CCIR-468-4: input 1 = —80 dBu, inputs 4+8 = -85 dBu (0dB output gain); input 1 = —70 dBu, inputs 4+8 = -65 dBu (+10dB output gain);
    CMRR @ 10 kHz: < -60 dB
    Gain: 0.5 dB steps +/-0.3 dB; 1 dB steps +/- 3-6 dB; 2 db steps +/- 6-10 dB
    Crosstalk @ 10 kHz: -70 dB
    Tubes: ECC 81 2 pcs, ECC 82 2 pcs, ECC 83 4 pcs
    Dimensions (H x W x D): 3.5" x 19.0" x 8.1" (2 units), 88 mm x 483 mm x 205
    mm
    Weight: 11.9 lbs, 5.4 kg
    Power requirements @ 115 V/230 V, 50-60 Hz: 40-55 W
    Note: All specifications @ RL=600 0hm


Voice your opinion! Be the first to review »
Questions about the SSA-2B Stereo Summing Amplifier (105653422)


To: GuitarCenter.com
PO Box 4769
Westlake Village, CA 91359
USA
866-498-7882
 
Order #: (if applicable)  * Denotes Required Field
*First Name:
*Last Name:
*Email:
Phone:
*Subject:
*Message:
Click to add file attachment
File Upload 5mb limit