Hagerman Audio Labs DA-10 User manual

DA-10
Vacuum Tube USB DAC
Made in USA

DA-10 Vacuum Tube USB DAC
2
Copyrights & Trademarks
©Copyright Hagerman Audio Labs 2008. All rights reserved. No part of this
document may be photocopied, reproduced, or translated to another language
without the prior written consent.
Disclaimer
The information contained in this document is subject to change without notice.
Hagerman Audio Labs shall not be liable for errors contained herein or for
consequential damages in connection with the furnishing, performance, or use of this
material.
Warranty
Hagerman Audio Labs warrants this product free of defects in materials and
workmanship for a period of 10 years. If you discover a defect, Hagerman Audio
Labs will, at its option, repair or replace the product at no charge to you provided
you return it during the warranty period, transportation charges prepaid to
Hagerman Audio Labs. This warranty does not apply if the product has been
damaged by negligence, accident, abuse or misuse or misapplication, has been
damaged because it has been improperly connected to other equipment or has been
modified without the express written permission of Hagerman Audio Labs. This
warranty is limited to the replacement or repair of this product and not to damage to
equipment of other manufacturers. Any applicable implied warranties, including
warranty of merchantability, are limited in duration to a period of the express
warranty as provided herein beginning with the original date of purchase and no
warranties, whether express or implied shall apply to the product thereafter. Under
no circumstances shall Hagerman Audio Labs be liable for any loss, direct, indirect,
incidental, special, or consequential damage arising out of or in connection with the
use of this product.
Hagerman Audio Labs
PO Box 26437
Honolulu, HI 96825
808-383-2704 (voice)
808-394-6076 (fax)
www.haglabs.com

DA-10 Vacuum Tube USB DAC
3
Description
The DA-10 is a world-class analog-to-digital converter employing the latest
technologies paired with vacuum tube amplification for a very clean and open
musical reproduction. Input is via USB and optimized for 16 bit 44.1k redbook
standard. Data is synchronously upsampled to 24-bits at 312.8kHz and re-timed
using a super low-jitter flywheel type VCXO-based re-clocker circuit. The actual
conversion is done using R2R 24-bit chips (the most expensive you can buy) with
phase linear (perfect transient response) output filter / translators. A high-
transconductance vacuum tube stage then provide the necessary gain and output
buffering.
Package Contents
• DA-10
• Power cord
• USB Cable
Specifications
Item Specification
Input USB 1.1
Data Rate 44.1k samples per second, stereo 16 bit
Jitter <10ps
Bandwidth (analog) 8Hz to 400kHz
Gain (analog) 33dB
Distortion 0.08%
Output Impedance 1.5k ohm
Output Voltage 1.8Vrms
SNR
Size 10” x 10” x 4”
Weight
Input Voltage 120Vac 35W
Tube Compliment 7788 (E810F) x 2

DA-10 Vacuum Tube USB DAC
4
Operation
The DA-10 connects between your computer (via USB cable) and linestage (or
integrated amplifier). There are four front panel LEDs.
LO: Indicates low voltage and filament supplies
HI: Indicates high voltage tube plate supply
CLK: Indicates the reclocking circuit has locked
DAT: Indicates valid data received at the USB input
Connect the power cord to a 120Vac source. Turn on using the pushbutton power
switch on the back panel. The DA-10 requires about 30 seconds warm-up to start
playing, and another 30 minutes to sound its best, which is typical of high quality
tube equipment. The FILTER switch on the back selects between slow and fast
rolloff modes for the digital filter. Slow mode is more transient correct for better
listening.

A A
B B
C C
D D
E E
F F
G G
5 5 4 4 3 3 2 2 1 1
This document contains proprietary information and except with written permission of Hagerman Technology LLC such information shall not be published, or disclosed to others, or used for any purpose, and the document shall not be copied in whole or in part. Copyright Hagerman Technology LLC 2007. All rights reserved.
IN+ IN-
VS+ VS- PLOCK /INVERT RLOCK RAWL RAWR OUTL OUTR VS+ VS- GND GND GND GND GND GND
GND GND
/STEEP
HAGDAC
1:1
0.4Vpp
1 3
4 6
GND GND
n/a B
DA-10: USB DAC Hagerman Technology LLC P.O. Box 26437 Honolulu, HI 96825
12Thursday, January 24, 2008
Title Size Document Number Rev Date: Sheet of
+6V3
-6V3
+3V3 +3V3
J3 IN
1 2 3 4
R10 75
J2 OUT
1 2 3 4 5 6 7 8 9
10 12 11 13 14 15 16 17 18 19 20
R3 22
R4 22
Y1 12MHz R6
1M
C10 33pF
C9 33pF
R1 1k5
C11 47uF 10V C1 1uF
C2 1uF
C3 1uF
C4 1uF
T1
R2 1k5
U1 PCM2704
GP
19
VBUS
10
D+
9
VD 7
/SPND 27
GR
17
VP 20
VL 13
VR 16
GL
12
GD
6
D-
8
TEST0
26 PSEL
4
VCOM 18
DOUT 5
GZ
11
CK 2
DT 3
HOST 21
TEST1
25
XTO
1
XTI
28
VOR 15
VOL 14
HID0
22
HID1
23
HID2
24
C8 1uF
J1 USB
1 2 3 4
C7 47uF 10V
L1 Bead
R7 110
D1 CLK
D2 DAT
C5 1uF
R5 220
R33 75
R34 75
S2 FILTER
LEFT RIGHT

A A
B B
C C
D D
E E
F F
G G
5 5 4 4 3 3 2 2 1 1
This document contains proprietary information and except with written permission of Hagerman Technology LLC such information shall not be published, or disclosed to others, or used for any purpose, and the document shall not be copied in whole or in part. Copyright Hagerman Technology LLC 2007. All rights reserved.
7V5 7V5
12mA +80V
+1.0V
7,8 1,3
2
6
+105V
115V
4 5 5 4
n/a B
DA-10: POWER Hagerman Technology LLC P.O. Box 26437 Honolulu, HI 96825
22Thursday, January 24, 2008
Title Size Document Number Rev Date: Sheet of
+6V3
-6V3
R13 10 2W
L4 9H
C14 200uF 350V
C13 10nF 250VAC
R16 10 2W
S1 POW
J4 AC
1 2 3
F1 0.5A
C15 200uF 350V
T3 F142XP
C20 40mF 10V C21 40mF 10V
R28 220 R30 220
L7 6mH L9 6mH
D9 LO R27 1k5
D7 MBR1100 D8 MBR1100 D10 MBR1100 D11 MBR1100
V1A 7788
C17 1uF 400V
R24 82
C18 470uF 10V
R22 220
R23 330k
R18 23k5 4W
R21 220
D6 HI
R14 390
D4 1N4734 5V6
R17 390
C12 470uF 10V
R19 220
C19 1uF 63V
Q1 MJE5731A
H1 Heater
R31 1k5
H2 Heater
L5 9H
R25 330k
J5 IN
D3 UF4007
T2 261C6
D5 UF4007 R15
47k 2W
R20 220
R29 220
C16 1uF 400V
R26 0R1 2W R32 0R1 2W
L8 6mH L6 6mH
C22 1uF 63V
LEFT