Roland TR-707 Rhythm Composer - Exclusive Soundgas HKA Modified Edition- SN 601036
For Sale: Professionally Modified & Serviced Roland TR-707 serial number 601036 - Premium Vintage Drum Machine with 8-Bank Sound Expansion
Transform your rhythm production with this expertly modified Roland TR-707 Rhythm Composer, featuring the exclusive Soundgas HKA mod expansion. This legendary 1980s drum machine has been enhanced with cutting-edge EPROM sound banks while maintaining complete reversibility and original functionality.
Key Features & Specifications
- Enhanced Sound Capabilities
- 8 Complete Sound Banks - Massive sonic expansion from original single bank
- Exclusive Soundgas Custom Banks - Four banks feature our signature sound selection
- Non-Invasive Modification - Completely reversible, maintains original TR-707 operation
- Professional Installation - Modified by one of our expert synth techs
- Fresh Service - Fully serviced and calibrated for optimal performance & reliability
Sound Bank Collection
Classic Roland & Exclusive Soundgas Custom Banks:
- TR-707 - Original vintage Roland sounds
- TR-727 - Latin percussion companion sounds
- TR-808 - Iconic hip-hop and electronic drums
- TR-909 - Essential house and techno rhythms
- Soundgas Roland CR/TR Collection - Rare CR-78 &; TR-66 sounds
- Soundgas Korg Favourites - KR-55 & Mini Pops 7 vintage gems
- Soundgas Elka/Maestro Fusion - Drummer One meets Rhythm King hybrid
- Soundgas Toy Box - Unique Mattel &Casio character sounds
Technical Details
- Bank Switching: Hold any of first 8 step keys during power-on
- Memory Retention: Selected bank remembered between sessions
- Cymbal Sounds: Last two sounds (crash/ride or quijada/chime) remain across all banks
- Sample Quality: Short, punchy samples optimized for EPROM storage
- External Appearance: No visible modifications - maintains original aesthetic
Operation & Compatibility
Power Requirements: 12V Centre Negative power supply (not included)
Soundbank Sources: All samples sourced from authentic vintage machines
Warranty Coverage: Protected by standard Soundgas warranty
Why Choose This Modified TR-707?
Vintage Authenticity Meets Modern Versatility
The only vintage drum machine you need? We love these units - with a great combination of vintage sound and essential features for maximum flexibility (midi, individual outputs and volume controls for each voice). And of course our curated collection of vintage rhythm sounds spanning decades of electronic music. Carefully selected sounds sampled from iconic machines in our collection, offering producers access to rare and distinctive rhythms in one compact unit.
Professional Modification
Fully reversible installation maintains collector value
Professional servicing ensures reliable operation
Quality EPROM expansion from respected HKA Design
No external modifications preserve original aesthetics
Unique Sound Character
While EPROM storage limitations mean samples are optimized for punch over length (explaining why you won't get long/deep 808 kicks), this constraint actually enhances the machine's character, delivering the tight, focused sounds that made 1980s drum machines legendary.
Perfect For:
Vintage Synth Collectors seeking enhanced functionality
Electronic Music Producers wanting authentic vintage sounds
Hip-Hop & House Producers needing classic Roland rhythms
Sound Designers exploring unique vintage character
Recording Studios adding multiple professional vintage drum sounds in one unit
Technical Specifications
Brand: Roland (Modified by Soundgas)
Model: TR-707 Rhythm Composer with HKA Expansion
Year: 1980s (Recently Modified & Serviced)
Sound Banks: 8 Complete Banks (4 Classic Roland + 4 Exclusive Soundgas)
Power: 12V Centre Negative (Adapter Required)
Condition: Excellent - Freshly Serviced & Modified
Modification: Professional HKA EPROM Expansion with Soundgas Custom Banks
Warranty: Covered by Standard Soundgas Warranty
Ready to ship immediately - Professional packaging and fast dispatch guaranteed.
More detailed specifications and sound samples available upon request.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
For Sale: Professionally Modified & Serviced Roland TR-707 serial number 601036 - Premium Vintage Drum Machine with 8-Bank Sound Expansion
Transform your rhythm production with this expertly modified Roland TR-707 Rhythm Composer, featuring the exclusive Soundgas HKA mod expansion. This legendary 1980s drum machine has been enhanced with cutting-edge EPROM sound banks while maintaining complete reversibility and original functionality.
Key Features & Specifications
- Enhanced Sound Capabilities
- 8 Complete Sound Banks - Massive sonic expansion from original single bank
- Exclusive Soundgas Custom Banks - Four banks feature our signature sound selection
- Non-Invasive Modification - Completely reversible, maintains original TR-707 operation
- Professional Installation - Modified by one of our expert synth techs
- Fresh Service - Fully serviced and calibrated for optimal performance & reliability
Sound Bank Collection
Classic Roland & Exclusive Soundgas Custom Banks:
- TR-707 - Original vintage Roland sounds
- TR-727 - Latin percussion companion sounds
- TR-808 - Iconic hip-hop and electronic drums
- TR-909 - Essential house and techno rhythms
- Soundgas Roland CR/TR Collection - Rare CR-78 &; TR-66 sounds
- Soundgas Korg Favourites - KR-55 & Mini Pops 7 vintage gems
- Soundgas Elka/Maestro Fusion - Drummer One meets Rhythm King hybrid
- Soundgas Toy Box - Unique Mattel &Casio character sounds
Technical Details
- Bank Switching: Hold any of first 8 step keys during power-on
- Memory Retention: Selected bank remembered between sessions
- Cymbal Sounds: Last two sounds (crash/ride or quijada/chime) remain across all banks
- Sample Quality: Short, punchy samples optimized for EPROM storage
- External Appearance: No visible modifications - maintains original aesthetic
Operation & Compatibility
Power Requirements: 12V Centre Negative power supply (not included)
Soundbank Sources: All samples sourced from authentic vintage machines
Warranty Coverage: Protected by standard Soundgas warranty
Why Choose This Modified TR-707?
Vintage Authenticity Meets Modern Versatility
The only vintage drum machine you need? We love these units - with a great combination of vintage sound and essential features for maximum flexibility (midi, individual outputs and volume controls for each voice). And of course our curated collection of vintage rhythm sounds spanning decades of electronic music. Carefully selected sounds sampled from iconic machines in our collection, offering producers access to rare and distinctive rhythms in one compact unit.
Professional Modification
Fully reversible installation maintains collector value
Professional servicing ensures reliable operation
Quality EPROM expansion from respected HKA Design
No external modifications preserve original aesthetics
Unique Sound Character
While EPROM storage limitations mean samples are optimized for punch over length (explaining why you won't get long/deep 808 kicks), this constraint actually enhances the machine's character, delivering the tight, focused sounds that made 1980s drum machines legendary.
Perfect For:
Vintage Synth Collectors seeking enhanced functionality
Electronic Music Producers wanting authentic vintage sounds
Hip-Hop & House Producers needing classic Roland rhythms
Sound Designers exploring unique vintage character
Recording Studios adding multiple professional vintage drum sounds in one unit
Technical Specifications
Brand: Roland (Modified by Soundgas)
Model: TR-707 Rhythm Composer with HKA Expansion
Year: 1980s (Recently Modified & Serviced)
Sound Banks: 8 Complete Banks (4 Classic Roland + 4 Exclusive Soundgas)
Power: 12V Centre Negative (Adapter Required)
Condition: Excellent - Freshly Serviced & Modified
Modification: Professional HKA EPROM Expansion with Soundgas Custom Banks
Warranty: Covered by Standard Soundgas Warranty
Ready to ship immediately - Professional packaging and fast dispatch guaranteed.
More detailed specifications and sound samples available upon request.
