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Upper Organ

Full Organ, Jazz Organ, Pipe Organ, 
Theater Organ, Synth Organ, Pop Organ, Rock Organ

Upper Orchestral

Strings, Grand Piano, Brass Section, Choir, 

Jazz Guitar, Jazz Scat

Lower

Lower Organ, Strings, Grand Piano, 
Pipe Organ, Choir, Orchestral Brass Ensemble

Pedal

Organ Bass, Pipe Organ Bass, 
Strings Bass, Bass+Cymbal

Solo

Trumpet, Mute Trumpet, Tenor Sax, Alto Sax, 
Flute, Pan Flute, Oboe, Clarinet

*This list shows just some of the voices available. The AT-15 features a total of 108 

high-quality built-in voices.

Big Band/Swing

Loose Big Band, Organ Swing, Big Serenade, 
Vocal Swing, Foxtrot 2, Big Band Swing, 
Blues, Club Swing  

Country/Gospel

Country Dreams, Revival, Oldtime Country, Cajun,
Soft Gospel, D Country 2, Gospel 2, Twostep

Oldies/Contemporary

Swing Pop, Pop’n Roll, 70s 1, Dreamin’, 
Michael’s Pop, 50s Pop 1, Beach Sound, 
Let’s Twist, Acoustic Pop, Surf Fun, Mersey Beat

Ballad

Scat Ballad, 6/8 Ballad, Sunny Feelin’, 
Love Romance, Medium Ballad, Pop Ballad, 
Soft Ballad  

Latin

Slow Rhumba, Cha Cha 2, Slow Bossa, Mambo 3,
Slow Beguine, Plena, Trad Tango, Salsa, Samba  

Waltz/March

Paris, Marching Band, Quiet Waltz, March 4/4, 
Waltz, March 2/4, Slow Waltz  

Trad/Acoustic

Quick Step, Hula, Broadway, Lager Polka, 
Raindrops, Guitar Trio, Fireside, Irish, Screen 2, 
P.Slow, G.Slow, P.Swing  

Disk*

6/8 Ballad, Trad Tango, Marching Band, Guitar Trio

*You can rewrite the 4 rhythms of the “Disk” category by loading 

a Music Style Disk (MSD/MSA Series).

Specifications

Manuals/Pedals

Upper: 

49 (C3-C7)

Lower:

61 (C2-C7) 

Pedalboard:

20 (C2-G3) 

Touch Response:

Initial

Touch (Upper/Lower) 

Pedals: 

Expression Pedal (ready for the Active Expression feature),

Damper Pedal 

Foot Switches: 

2 pcs. (on the expression pedal, function assignable)

Sound

Sound Generator: 

Conforms to GM2/GM/GS/XG lite 

Voices:

108 (included 4 Active

Expression voices) 

Max. Polyphony:

64 voices  

Drums/SFX Sets:

8 drum sets/1 SFX set

Parts: 

Upper: Max 3 parts (Organ, Orchestral, Solo*), Lower: Max 2 parts (Lower, Solo*), Pedal:

1 part (Pedal)  * The solo part is available for either Upper or Lower  

Effects: 

Rotary Sound,

Reverb, Sustain, Glide 

Automatic Accompaniment

Rhythms: 

62 rhythms in 8 categories 

Disk Rhythm: 

4 rhythms 

Voices for Accomp./SMF: 

226 voices  

Arranger Control: 

Arranger On/Off*, Start/Stop, Sync

Start*, Intro/Ending, Fill In (Original/Variation), Chord Intelligence*, One Touch Program, Intro
Count Down, Auto Standard Tempo  (*linked to the One Touch Program)

Other Functions

Registration Memories:

8  

Harmony Intelligence: 

6 types 

Key Transposition:

-4 to +7 (Half steps)  

Playback Transposition:

-24 to +24 (Half steps) 

Master Tuning:

415.3Hz-466.2Hz (0.1Hz steps)

Composer

Tracks: 

7 (Playback) 

Note Storage:

Approx. 40,000 notes  

Song Length:

Max. 999 measures

Tempo:

Quarter note = 20-500  

Resolution: 

120 ticks per quarter note 

Recording: 

Realtime (Replace) 

Functions:

Track Mute, Channel Mute, Lyric Display

Metronome

Beat: 

2/2, 0/4, 2/4, 3/4, 4/4, 5/4, 6/4, 7/4, 3/8, 6/8, 9/8, 12/8 

Volume:

10 levels  

Sound:

4 types

Disk

Disk Format: 

3.5 inch micro floppy disk 2HD (1.44 M byte), 2DD (720 K byte)

Songs:

Max. 99 songs  

Playable Format:

Music Atelier original format, Standard MIDI Files

(format 0/1) for GM2/GM/GS/XG, Roland Piano original format (i-format), 
Music Style Disk (MSD/MSA Series)

Save:

Music Atelier original format, Stadard MIDI Files (format 0)

Output

Rated Power Output: 

20 W + 20 W 

Speaker:

16 cm x 2 (Full Range)

Display

16 characters x 2 lines (backlit LCD), Bouncing Beat Indicator

Connectors

Headphones jack (stereo), Audio Output jacks (L /mono, R), 
Audio Input jacks (L /mono, R), MIDI connectors (In, Out), AC Inlet

Power Supply

Power Supply: 

AC 117 V, 230 V, 240 V 

Power Consumption:

65 W

Finish

Simulated Mahogany

Dimensions

Console: 

1210 (W) x 490 (D) x 320 (H) mm, 47-11/16 (W) x 19-5/16 (D) x 12-5/8 (H) inches

Stand:

1230 (W) x 515 (D) x 748 (H) mm, 48-7/16 (W) x 20-5/16 (D) x 29-1/2 (H) inches  

Total:

1230 (W) x 515(D) x 1060 (H) mm, 48-7/16 (W) x 20-5/16 (D) x 41-3/4 (H) inches

Weight

Console: 

25.0 kg / 55 lbs 2 oz  

Stand:

24.0 kg / 52 lbs 15 oz  

Total:

49.0 kg / 108 lbs 1 oz

Accessories

Accessories: 

Owner’s Manual, 3.5 inch micro floppy disk (2HD, Blank Disk), Music Style Disk,

Power Cord, Keyboard Cover, Note Label

Options

Bench, Stereo Headphones

General MIDI

General MIDI is a set of recommendations which seeks to provide a way to go beyond the limitations of

proprietary designs, and standardize the MIDI capabilities of sound generating devices. Sound generating devices

and music files that meet the General MIDI standard bear the General MIDI logo. Music files bearing the General

MIDI logo can be played back using any General MIDI sound generating unit to produce essentially the same musical

performance.

General MIDI 2

The upwardly compatible General MIDI 2 recommendations pick up where the original General MIDI left

off, offering enhanced expressive capabilities, and even greater compatibility. Issues that were not covered by the orig-

inal General MIDI recommendations, such as how sounds are to be edited, and how effects should be handled, have

now been precisely defined. Moreover, the available sounds have been expanded. General MIDI 2 compliant sound

generators are capable of reliably playing back music files that carry either the General MIDI or General MIDI 2 logo. In

some cases, the conventional form of General MIDI, which does not include the new enhancements, is referred to as

‘‘General MIDI 1’’ as a way of distinguishing it from General MIDI 2.

SMF with Lyrics

‘‘SMF with Lyrics’’ refers to SMFs (Standard MIDI Files) that contains lyrics. When Music Files carrying the ‘‘SMF

with Lyrics’’ logo are played back on a compatible device (one bearing the same logo), the lyrics will appear in its display.

GS Format

The GS Format is Roland’s set of specifications for standardizing the performance of sound-generating

devices. In addition to including support for everything defined by General MIDI, the highly compatible GS Format

additionally offers an expanded number of sounds, provides for the editing of sounds, and spells out many details for

a wide range of extra features, including effects such as reverb and chorus. Designed with the future in mind, the GS

Format can readily include new sounds and support new hardware features when they arrive. Since it is upwardly com-

patible with General MIDI, Roland’s GS Format is capable of reliably playing back GM Scores equally as well as it per-

forms GS music files (music files that have been created with the GS Format in mind). This product supports both the

General MIDI 2 and the GS Format, and can be used to play back music data carrying either of these logos.

XG lite

XG is a tone generator format of YAMAHA Corporation that defines the ways in which voices are expanded

or edited and the structure and type of effects, in addition to the General MIDI 1 specification. XGlite is a simplified ver-

sion of XG tone generation format. You can play back any XG music files using an XGlite tone generator. However, keep

in mind that some music files may play back differently compared to the original files, due to the reduced set of con-

trol parameters and effects.

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With the AT-15, you can use music files that carry any of these marks:

Rhythm List (Music Style for Automatic Accompaniment)   Total of 62 rhythms

Available Music Files

Voice List (Excerpt)   Total of 108 voices

*All specifications and appearance are subject to change without notice.

The Basic Way to Organ Playing Fun

AT-15

Visit us online at www.Roland.com

Printed in Japan Aug.’03 RAM-3728 B1G2 ASIA

This catalog is made of 100% recycled paper and printed with soybean ink.

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