Pedaltrain Classic JR Dimensions and How Many Pedals Fit

The Pedaltrain Classic JR is 18 × 12.5 in (457 × 318 mm). It holds 10 BOSS-size pedals in 2 rows with slim couplers, or 8 with patch cables, before a power supply. Two rows of BOSS-size pedals need 10.7 in (273 mm) of depth. The board has 12.5 in (318 mm).

Plan on this board

DS-1
10 BOSS-size pedals with slim couplers between them, drawn to scale.

How many pedals fit on the Pedaltrain Classic JR

BOSS-size means a compact like the BOSS DS-1, 2.87 × 5.08 in (73 × 129 mm). Pedals stand upright, rows are 15 mm apart, and no room is kept for a power supply. How we count

Pedals that fit on the Pedaltrain Classic JR, by body size
Pedal bodySizeSlim couplers (12 mm)Patch cables (25 mm)
MiniIbanez TS Mini Tube Screamer2.01 × 3.66 in (51 × 93 mm)217 × 3 rows186 × 3 rows
MXR sizeMXR Phase 902.32 × 4.37 in (59 × 111 mm)126 × 2 rows105 × 2 rows
BOSS compactBOSS DS-12.87 × 5.08 in (73 × 129 mm)105 × 2 rows84 × 2 rows
Large boxStrymon TimeLine6.75 × 5.1 in (171 × 130 mm)42 × 2 rows42 × 2 rows

Dimensions and specs

Pedaltrain Classic JR
Width18 in (457 mm)
Depth12.5 in (318 mm)
Height3.5 in (88.9 mm)
Weight1.18 kg (2.6 lb)
Rails4
Mounting surfaceRails
CaseSoft and hard case versions
Size measuredOutside frame

Published as: 18 in x 12.5 in x 3.5 in; 2.6 lbs (1.18 kg). Source: manufacturer specification. Checked 2026-11-05

Nearby sizes

  • Smaller footprint

    20 × 8 in (508 × 203 mm). It is 2 in (51 mm) wider and 4.5 in (114 mm) shallower than the Classic JR. It holds 6 BOSS-size pedals in 1 rows with slim couplers, against 10 on the Classic JR.

  • Larger footprint

    18 × 14.5 in (457 × 368 mm). It is as wide as the Classic JR and 2 in (51 mm) deeper. It holds the same number, 10, with slim couplers.

Plan on this board